Six-y Beast [Unhinged] Legendary Planeswalker — Arlinn Set: Phyrexia: All Will Be

Set: Phyrexia: All Will Be One Prerelease Promos Type: Legendary Creature — Phyrexian Horror Rarity: Mythic Cost: {5}{G}{G} Reach

The rest you can find

Flashback—{R}{R}

Set: EX: FireRed & LeafGreen Type: Grass Rarity: Uncommon Retreat cost: Colorless

Set: Rivals of Ixalan Type: Sorcery Rarity: Common Cost: {2}{B} Target opponent reveals their hand

Six-y Beast [Unhinged] Legendary Planeswalker — Arlinn Set: Phyrexia: All Will BeSet: Unhinged Type: Creature Beast Rarity: Uncommon Cost: {3}{R} As Six y Beast enters the battlefield, you secretly put six or fewer +1 +1 counters on it, then an opponent guesses the number of counters. If that player guesses right, sacrifice Six y Beast after it enters the battlefield. Is it six?