Branchsnap Lorian
Four power for three mana with trample is a beating, and the single point of toughness is the bill you pay for it: anything that pings, blocks, or trades takes the Lorian down before it gets to swing twice. The card's real trick is using morph to defer that fragility to the turn it matters most. Cast face down, it sits as a nondescript 2/2, no longer a 4/1 that any one-damage ping can pick off the moment it lands and no longer the obvious target a removal spell wants to spend on. Flip it for a single green and the defender who blocked the 2/2 is suddenly eating four trampling damage, or the open swing connects for a chunk the opponent could not have priced into their combat math. It converts a glass-cannon body into a threat on a timer the controller sets: the player decides when the toughness exposure begins rather than committing the 4/1 to the board and praying it survives a turn cycle. The flip being green-only and the unmorph trivial make the disguise nearly free to maintain, so the card asks an aggressive deck to trade a little tempo (three mana for a 2/2 now) for a safer, sharper attack later. This is morph doing exactly what a fragile beater needs from it: hiding the toughness until the damage is already on the board.
