Kethis, the Hidden Hand

Legendary spells you cast cost {1} less to cast.
Exile two legendary cards from your graveyard: Until end of turn, each legendary card in your graveyard gains "You may play this card from your graveyard."

Phyrexian Unlife

You don't lose the game for having 0 or less life.
As long as you have 0 or less life, all damage is dealt to you as though its source had infect. (Damage is dealt to you in the form of poison counters.)

Have

Solemnity

Players can't get counters.
Counters can't be put on artifacts, creatures, enchantments, or lands.

Spike Cannibal

This creature enters with a +1/+1 counter on it.
When this creature enters, move all +1/+1 counters from all creatures onto it.