Regal Leosaur

Where its mutate peers stacked keywords onto a single growing body, this one turns the merge itself into a payoff: each time a mutation resolves, your other creatures get +2/+1 until end of turn. The strategic axis follows directly from that scope. The trigger never touches the mutant, only what is already on the battlefield when the mutation lands, so the reward is measured by how wide you have committed, not by the size of the pile you are building. This wants a broad board to buff, not a lone fatty to fuse onto. Fed its mutate cost of , it is a sorcery-speed pump that also merges onto an existing creature, either becoming the new top of a stack or hiding beneath one you already control; if you can trigger it more than once in a single turn, those temporary anthems add up before cleanup wipes them away. Cast for its cost, it is a plain 2/2 idling until a later mutation earns the trigger. The reward peaks exactly when you have overcommitted, which is also the board state a sweeper punishes hardest. Among its mutate kin, this is the one aimed at ending a game in one burst rather than grinding one out: a red-white finisher that asks you to sink resources into the battlefield, then cashes that risk in a single alpha strike.