elements have cards with the purpose of swarming the field right? and this is the 'thing' to feed on monsters like otyugh.well how about the cards with swarming purpose becomes a 'thing' for effects based on negations ?
and what about making cards with regenerating effects or cards that can be revived from the place where dead cards go(wherever that place is)
- more cards with special summon effects
- fusion monsters
- cards that gives another card powerful attacks for a turn or two then get destroyed or inflicted with bad effects like -5 hp per turn .
- a card that changes atk with def
-a card that can remove from play another card in the opponent's field with by sacrificing quantums or the card itself
- cards which have effects that needs to be unlock by summoning another specific monster.