Aeq-Ton the Anointed

Haste
Cards you own in exile cost {1} less to cast for
each 1 life your opponents have lost this turn.
Whenever a source you control would deal
damage to a player, exile the top card of your
library. Until end of turn, you may cast that card
and you may spend mana as though it were mana
of any color to cast that spell.