Mewtwo EX (54/99) [Celebrations: 25th Anniversary - Classic Collection] Wizard Zombie Goblin Shieldwall — Sacrifice Tyrant Guard:

Shieldwall — Sacrifice Tyrant Guard: Creatures you control with counters on them gain hexproof and indestructible until end of turn

Athenian Teacher has hexproof as long as it's untapped

put a +1/+1 counter on Zurgo Helmsmasher

Set: Unknown Event Type: Legendary Creature — Phyrexian Serpent Squirrel Rarity: Common This spell can't be countered

but you may put it on top of your library instead of into your graveyard

Mewtwo EX (54/99) [Celebrations: 25th Anniversary - Classic Collection] Wizard Zombie Goblin Shieldwall — Sacrifice Tyrant Guard:Set: Celebrations: 25th Anniversary Classic Collection Type: Psychic Rarity: Ultra Rare Retreat cost: Colorless,Colorless