When Apex Altisaur enters the battlefield, its first ability triggers.
Holding priority, activate Gyome twice by paying 2 and sacrificing two Foods, giving Apex Altisaur and any creature an opponent controls indestructible until end of turn.
Resolve the Apex Altisaur trigger, causing Apex Altisaur to fight the indestructible creature the opponent controls.
Apex Altisaur's second ability triggers, and Magmatic Galleon's second ability triggers if the opposing creature's toughness is less than 0.
Resolve the Magmatic Galleon trigger, if applicable, creating a Treasure artifact token.
Resolve the Apex Altisaur trigger, causing it to fight the indestructible creature the opponent controls.
Repeat from step 5.
This loop transforms Apex Altisaur's voracious entrance into a perpetual brawl by turning its lethal fights into safe, one-sided sparring sessions. With Gyome, Master Chef granting the necessary indestructible protection to both your dinosaur and an opponent's creature, the Altisaur can repeatedly fight the same target without dying, triggering its Enrage ability infinitely. Meanwhile, Magmatic Galleon watches the ensuing onslaught and capitalizes on the excess noncombat damage, generating an endless stream of Treasure tokens to fund your board state.