Lord Skreech Verminking

Cascade (When you cast this spell, exile cards from
the top of your library until you exile a nonland card
whose mana value is less than this spell's mana value.
You may cast that card without paying its mana cost,
then put all cards exiled this way that weren't cast on
the bottom of your library in a random order.)
Other Rat creatures you control get +1/+1.

This most ancient and monstrous of all Verminlords is
a blight upon reality.