Octopus Form

Untapping a creature you control is the move that turns a defensive pump into a three-in-one: swing with a creature and still have it back to block, or reuse a tap ability twice in a turn, all while the +1/+1 and hexproof let it shrug off targeted removal until end of turn. Combat tricks that grant protection are old hat; the untap is what folds a trick, a shield, and an activated-ability enabler into one blue mana. An instant this overloaded would normally need a downside or a steeper cost to be fair in a maindeck. The Lesson type pays that bill instead. A card that can be tucked into a sideboard and fetched charges you a resource other than an opening-list slot to reach it, so the payoff can be tuned generously precisely because access already has a price. The friction is in how you unlock it, not in what happens once it resolves: gate the delivery, then let the effect run rich. That inversion is the whole design idea, and it is what lets a one-mana instant this stacked skip most of the usual balancing knobs.