I was playing UB Mannequin, back when Lorwyn had just came out, so Standard was Time Spiral Block, Cold Snap, 10th Edition and Lorwyn. I was facing UR Dragonstorm on the finals. It was game 2, I was winning 1-0. He knew I didn't have any counters, so he went to combo off. He ended up with a Storm count of 4, good enough for 4 Bogardan Hellkites, so my 16 life were done with. I went into the tank a little as he was combo'ing, and came up with this:
-I let every spell resolve until he drops the D-Storm, Storm makes 3 copis of it, all on the stack;
-I let the first one resolve, he fetches the first Hellkite and puts the ability onto the stack, targeting me;
-I let it resolve and take five;
-I then play Makeshift Mannequin, before the next copy of D-Storm resolves, targeting Shriekmaw in my graveyard;
-I bring it back, targeting his Hellkite;
-The ability resolves, his Hellkite dies;
-I play Extirpate on it;
-He lost all his dragons, had 3 copies of D-Storm fizzle and conceded due to having no way to kill me anymore, except Venser, Shaper Savant beats, which were not NEARLY enough.