Vankidion, Doomcrafter

Artifacts you control have
Ward - Sacrifice a nonland permanent
with mana value greater than
this permanent's mana value.
{t}{x}{w/b}{w/b} where {x} can't be less than the target's
mana value: target artifact you control gains
"At the beginning of your upkeep,
you win the game". Activate only as a sorcery