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3WW
This spell cost 1 less for each card your opponents have drawn this turn.
Players can't draw more than one card each turn.

Flash
Flying
2/4

I like the idea on this one. I'm guessing the idea here is to have creatures not be able to use any abilities when they ETB and wait until the next turn? If so, might need to have them "come into...

I'd like this but as an enchant world type of card, where both players get to use its ability. Like:
Whenever a card is put into a graveyard, that cards owner may deal 1 damage to target player....

Recurring Horror - BBB
Creature - Horror
Haste
During your upkeep, if ~RH is in your graveyard, you may sacrifice a creature. If you do, return ~RH to the battlefield with a +1/+1 counter.
When...