Needs:

Planeswalkers or Emblem creators
Spells / effects that count number of creatures
Slivers
Hounds / Dogs
Things that care about spirits / dying / boosting creature tokens
Things that make max hand size bigger
Creatures with flash
Homarids, Camarids, Cephalids, Nautilids, Merfolk
Things that scry
Things that care about moving zones / exile / top of library / grave / etc
Locuses!
Something to reanimate?
Tribal permanents?
Library search effects
Something to tap your own artifact / permanent
Targetted spells / abilities
Multi-mana producers
ways to remove enchantents
keywords or ability words
activated abilities? Combo with Vazal?
effect doublers?
Domain
white bordered cards