Doomsday Demon Lord

Delayed (You must pay the mana cost of this
spell. Then exile it face-up. You may cast this
card without paying its mana cost on a turn
after this one.)
Flying, Trample
When Doomsday Demon Lord enters the
battlefield, if it was cast from the delayed ability.
Each player cast a copy of Doomsday. At the
endstep, gain life equal to the life lost this turn.