Ouch

Flash, Storm, this spell can't be countered, Indestructible, Hexproof
When Ouch enters the battlefield, you may search all libraries for any number of phyrexian cards, put them onto the battlefield under your control, then shuffle.
Whenever a creature you control is dealt damage, up to one target player sacrifices permanents equal to that much damage^X.
Creatures you control have annihilator X