The First Sliver (MR) – MtG Modern Horizons – Wizards of the Coast from Wizards of the Coast

Description

The First Sliver
Legendary Creature — Sliver
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 of your library in a random order.)

Sliver spells you cast have cascade.