Feldon of the Third Path

Destroy all lands.

Take an extra turn after this one.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

T: Add C. 1, T: Tap target land.

Destroy all creatures. They can't be regenerated.

Flash When this creature enters, copy target instant or sorcery spell. You may choose new targets for the copy.

T: Add C. T, Sacrifice this land: Destroy target nonbasic land.