Bastion Mastodon

A 4/5 for five generic is the kind of artifact body that needs a small justification to earn its slot, and this one buys it with a recurring white activation: pay a single white mana and the elephant keeps its feet under it after swinging. The cost structure is the tell. The body casts off any mana, but the ability that makes it worth running asks for white specifically, which steers the card toward decks already in that color rather than treating it as colorless filler for any shell. It belongs to the long line of artifact beaters whose stat line reads slow until a repeatable ability earns the difference: here the toughness survives most early trades, and the optional vigilance lets it pull double duty in board states where both attacking and blocking are live. The ability does nothing on the turn it lands; the body arrives without haste, and vigilance only pays off once you are already on offense and want to leave a blocker home. What five mana buys, then, is a durable artifact that wants a grinding midgame and a spare white pip each turn to stop forcing the choice between pressure and defense. The activation being optional matters more than it looks: in a stalled board you simply do not pay, and the card sits as a clean 4/5 wall until the spare mana is there to spend.