Ruin, of the Apocalypse

Haste, Trample, Hexproof

At the beginning of your end step, if you control
War, Stripped of power and Ruin, of the Apocalypse, and a Legendary creature died this turn, you may pay {12}{b/r}{b/r}{b/r}{b/r}{b/r} and exile both creatures and meld them into War and Ruin.

Melding costs X less where X is the number of Legendary cards in all graveyards.