Gnottvold Hermit // Chrome Host Hulk

The clever half of this card is where the compleation cost sits. A 4/4 troll that pays five and a Phyrexian blue pip to flip is a body first and an engine later: cast it as a plain beater and never touch the transform, or feed two life into the pip when blue mana runs dry and unlock a creature that rewrites combat every time it swings. That optionality is the point. The flip side does not grow itself, and it does not spread its buff around the board either: it can hand a temporary 5/5 profile to up to one other creature each time it attacks, so the value lives in picking the right target rather than in raw board width. A small utility creature or an evasive threat suddenly hits like a fatty, then reverts by end of turn. The Phyrexian mana clause is what makes the transform reachable outside of dedicated blue decks, letting a mostly-colorless board still find its second gear. The sorcery-speed restriction is the discipline that keeps a repeatable pump from becoming an instant-speed ambush: the flip has to happen during your main phase, before blocks are declared, so you commit to it without knowing how the opponent will react. Flip pre-combat and the Hulk still attacks that same turn to hand out the buff, but the choice is locked in blind. It is a two-card design compressed into one slot, priced so that both the floor and the ceiling stay honest.