Kolaghan Stormsinger

Haste on a one-mana body announces the front side's whole plan: an aggressive one-drop that attacks the turn it lands. So the megamorph clause is the part worth studying, because it exists to solve a problem the front side does not have. Cast face down as a 2/2 for three, the Shaman is not hiding anything valuable; the disguise is a delivery mechanism. Turn it face up for one red and it becomes a 2/2 (base body plus the counter megamorph puts on as part of the same action), while a separate trigger goes on the stack: when it resolves, a creature gains haste until end of turn. That grant is the payload. Note the trigger reads target creature, not another target: it can legally point back at the Stormsinger itself, though the reason to run it is to hand haste to something bigger. Drop an expensive threat at sorcery speed, unmorph the Shaman, and the fatty swings a turn ahead of schedule, the cheap Human working purely as an ignition switch. The design's real trick is that it holds the timing open: you decide, once the board tells you which you need, between a one-drop clock now and a haste enabler later. It wants a shell full of clumsy, expensive creatures that resent sitting idle, using morph not as protection but as a way to bank the haste grant until it lands where it matters.