The idea of pyromancy, hurling flame like you'd found the right flower in the Mushroom Kingdom, is so alluring that one of the game's first Planeswalkers (Chandra Nalaar) was designed as an embodiment of the concept
Along with Evolution Sages proliferate ability, you can expedite how fast the poison counters increase for your opponents after you have attacked with Tyrranax Rex and Tyrranax Atrocity
(C) - This one just has it all, drawing from opponents libraries, copying spells, turning things into frogs, and hey, a surprise chump blocker to boot
However, no other card in the game offers such a strong advantage
I'm happy that it turned out that way since it meant we decided to try putting the landfall mechanic on all the chocobos