Gloryheath Lynx

Lifelink Whenever this creature attacks while saddled, search your library for a basic Plains card, reveal it, put it into your hand, then shuffle. Saddle 2 (Tap any number of other creatures you control with total power 2 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6op07ricjppb1hqn9r8h3d.