Masticore 
Artifact Creature — Masticore
At the beginning of your upkeep, sacrifice this creature unless you discard a card.
: This creature deals 1 damage to target creature.
: Regenerate this creature.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Prints
Vintage Masters
EN · VMA · 2014-06-16
From the Vault: Relics
EN · V10 · 2010-08-27
World Championship Decks 2000
EN · WC00 · 2000-08-02
World Championship Decks 2000
EN · WC00 · 2000-08-02
World Championship Decks 2000
EN · WC00 · 2000-08-02
World Championship Decks 1999
EN · WC99 · 1999-08-04
World Championship Decks 1999
EN · WC99 · 1999-08-04
Urza's Destiny
EN · UDS · 1999-06-07