Unitized Affinity

Choose one each turn—
•{w} and {b} spells cost 1 less to cast depending
on the color of evotion
•Creatures you control gain a +4/-1 until end
of turn. if any creature you control dies this turn
exile target creature or take a creature card from
your graveyard
•search your library for either a plains or swamp
sacrifice Unitized Affinity.