It is not fired off very often, mostly because people go to all lengths to stop the ultimate happening but also because he only has a +1 to grow, starts at a measly 3 loyalty and often needs to fire off a couple of -2 effects en route so as to remain alive
This card, however, is NUTS in EDH
Thats okay, just pay and say X=0, and the spell works just fine
Elvish Promenade is a four-drop tribal sorcery that will simply make a 1/1 Elf creature token for every Elf the player already has
If that weren't enough of a reason to grab this card during draft, Asinine Antics can even be cast with flash if its controller pays an additional two colorless mana
Each of your creatures gets +1/+1 for each other creature that shares at least one creature type with it