Sneak Attack [Double Masters] Condition:Near Mint Whenever Guardian of the Gateless

Whenever Guardian of the Gateless blocks

Set: Modern Horizons 3 Type: Legendary Artifact Creature — Human Rarity: Mythic Cost: {W}{U}{B}{R} When Breya

Set: Core Set 2021 Prerelease Promos Type: Legendary Creature — Elf Warrior Rarity: Rare Cost: {1}{R}{G} As long as it's your turn

Then for each opponent with three or more poison counters

Set: Chronicles Type: Sorcery Rarity: Uncommon Cost: {X}{X}{U} Discard X cards

Sneak Attack [Double Masters] Condition:Near Mint Whenever Guardian of the GatelessSet: Double Masters Type: Enchantment Rarity: Mythic Cost: {3}{R} {R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.