Its a free discard outlet as well, and there are lots of exploitable synergies with madness, discard, delirium, reanimator, and the like
Ancient Imperiosaur is awesome in a deck filled with creatures, since it can hit the board early and with a lot of counters
This becomes increasingly better as the number of opponents increases, and a little Sensei's Divining Top trickery can go a long way to secure a big follow-up like Combustible Gearhulk
Final Fantasy VI touched the pixel era of games and was a favorite of several other designers in the studio
If you dont cast it, put it into your hand. Basically, as long as you use instant speed spells, you can constantly generate value by drawing cards or casting stuff for free, and thats really very hard to beat when youre also messing up everyone elses fun at the same time