XD Glad someone else got that one. And yeah, while it helps Dark World get its monsters out, your opponent gets to draw for each one, so...well, at least you said more than Alter Ego >.>...
Hey, I was typing my post in advanced so I didn't see you butting in ahead of me until it was time for me to go to Jujutsu practice, meaning that I only had the time to edit in a few hasty lines. And I
did mention Dark World, you know. It still amounts to more than you said about mine. :O And yeah, Dark World Engine is pretty breakadelic...I'd say restrict it to one use per turn and add a maintenance cost in life points to balance it out.
Anyway...on Tsukuya, it's not a complete lock since Parasitic Tokens are viable for tribute, meaning that they can be used to bring out...say, a Monarch? Not nice for the parasite demon player. But yeah, I think it warrants being moved up to high-level. At least that makes it a bit more expensive to summon. xP Also, shifting the token summon to the Standby Phase to give the opponent a fair shot at abusing them.
Generally, though, Ojama Trio plus parasite demons means nasty times for the opponent anyway since you can special summon a low-level on your own turn, set summoning flute and Ojama Trio and then trigger them both on your opponent's turn (That's two parasite demons and three ojama tokens for a lock). Hmm...speaking of which, I ought to edit the flute to prevent that. Also, Excorcism isn't a direct replacement for Purge since it can only destroy one monster and only on your turn (since it's a Normal Spell). Purge, on the other hand, can be used as a control measure in case Cleansing Seal is destroyed through Typhoon or whatever and you're staring down a horde of 2000+ Atk demons. :O Also, the maximal damage is higher (4000 for a full field).
On the equips...ooh, I just love Shield Chain. Now that's something you could actually consider running in - say - a Shield and Sword rogue deck. Lock down the opponent with heavy defense monsters and the S & S for the win. The search function is nice since it laughs at the gadget one-for-one trade-off principle.
Mirror Shield...large benefits, huge penalty. But wait, how are you supposed to get rid of the dang thing if it prevents all targeting? o.O You'd have to go with something like Giant Trunade or Heavy Storm, both of them limited nowadays.
Purple Dagger otA; neat, good support for trap-heavy decks.
Green Jewel Sword ftB; this one's bordering on a bit too good, imo. I mean, removing spell cards from play is very easy now that Spell Striker is around, so this one is sort of asking for recycled spells. Still, it does call for destroying a monster in battle - not the trendy thing right now - so I guess it's not quite Magician of Faith.
By the way, imagine equiping either of those to Asura Priest and then wiping out some Ojama tokens. Now
that's a beneficial trade-off for you.
Aaaanyway, moving on to the promised cards:
Parasite Demon Karashah
Fiend/Effect
10 Star/Dark
3600 Atk/2800 Def
This card can only be Special Summoned by Tributing 3 monsters on your opponent's side of field and is Special Summoned to your opponent's side of the field. If you Special Summon this monster, you cannot Normal Summon or Set a monster during the same turn. This card may not be offered as tribute under any circumstances. During each Standby Phase, the controller of this card tributes 2 cards from his/her field. If there are no cards to tribute, the controller of this card pays 1000 life points instead.
Parasite Demon Ihtafeer
Fiend/Effect
7 Star/Earth
2700 Atk/2200
This card can only be Special Summoned by Tributing 2 monsters on your opponent's side of field and is Special Summoned to your opponent's side of the field. If you Special Summon this monster, you cannot Normal Summon or Set a monster during the same turn. This card may not be offered as tribute under any circumstances. When this card is special summoned, select two spell/trap card zones on your opponent's field (you cannot select a zone occupied by a spell or trap card). The selected zones cannot be used as long as this card remains face-up on the field.
Parasite Demon Severash
Fiend/Effect
8 Star/Dark
2900 Atk / 2300 Def
This card can only be Special Summoned by Tributing 2 monsters on your opponent's side of field and is Special Summoned to your opponent's side of the field. If you Special Summon this monster, you cannot Normal Summon or Set a monster during the same turn. This card may not be offered as tribute under any circumstances. The controller of this card pays 500 life points each time he/she sets a card from his/her hand. (this is not optional)
Parasite Demon Shamishra
Fiend/Effect
6 Star/Fire
2550 Atk / 600 Def
This card can only be Special Summoned by Tributing 1 monster on your opponent's side of field and is Special Summoned to your opponent's side of the field. If you Special Summon this monster, you cannot Normal Summon or Set a monster during the same turn. This card may not be offered as tribute under any circumstances. The controller of this card pays 500 life points each time he/she declares an attack.
Parasite Demon Saadat
Fiend/Effect
6 Star/Earth
2450 Atk / 1850 Def
This card can only be Special Summoned by Tributing 1 monster on your opponent's side of field and is Special Summoned to your opponent's side of the field. If you Special Summon this monster, you cannot Normal Summon or Set a monster during the same turn. This card may not be offered as tribute under any circumstances. The controller of this card has his/her maximum hand size reduced to 4.
Parasite Demon Zeptiemus
Fiend/Effect
4 Star/Water
1600 Atk/1800 Def
This card can be Special Summoned to your opponent's side of field. If you Special Summon this monster, you cannot Normal Summon or Set a monster during the same turn. This card may not be offered as tribute under any circumstances. All card effects that would increase the life points of this card's controller are negated.
Parasite Demon Nefreeti
Fiend/Effect
4 Star/Fire
1900 Atk / 1300 Def
This card can only be Special Summoned to your opponent's side of the field. If you Special Summon this monster, you cannot Normal Summon or Set a monster during the same turn. This card may not be offered as tribute under any circumstances. Discard this card from your hand in order to add 'Cleansing Seal' from your deck to your hand. While there are no face-up field spells on the field, the controller of this card pays 600 life points during each of his/her Standby Phases. (this is not optional)
Parasite Drain
Normal Spell
Inflict damage to your opponent equal to 200 x the combined number of 'Parasite Demon' monsters and Parasitic tokens on his/her field then increase your life points by the same amount. During your draw phase, you may add this card from your graveyard to your hand instead of drawing a card.
Blood Pact
Normal Spell
Select one 'Parasite Demon' monster from your graveyard then pay a number of life points equal to 200 x the level stars of the target monster in order to special summon it to your field in face-up Attack or Defense position. This card's effect is not affected by any effects of the special summoned monster.
Demonic Symbiosis
Continuous Trap
During each Standby Phase, if this card is face-up on your field pay 500 life points, otherwise this card is destroyed. While this card is face-up on your field, you may discard one 'Parasite Demon' monster from your deck in order to negate an attack from one of your opponent's monsters. For each card discarded by this effect, pay 100 life points.
Poltergeist
Normal Spell
Destroy one 'Parasite Demon' monster on your opponent's field to look at your opponent's hand. Select one card and discard it to the graveyard.
Okay, I think I'm done. *Innocent smile*