You will need Teshar on board, along with a sacrifice outlet, a creature that returns an artifact to your hand, and a zero-mana artifact
Booster pack with 12 randomised cards
Source: Final Fantasy Wiki As you have probably guessed, this boss hits 10x harder than its normal-sized brethren and its signature move is called 10,000 Needles. Personally, I think some form of direct damage would have been a cooler translation from video game to MTG card in the games, and even in the card art, this looks like a ranged attack, rather than the cactus growing bigger
Cards that are Suspended, which at the point you're looking to be a problem, is probably half or more of your board
Soul of Phyrexia: If you have five mana at the ready, it can save you from a board wipe
This isnt the deck with Seedborn Muse in it, but you could go that route anyway, making an 8/8 during everyones turn for no mana