Creature — Art Lizard
Whenever you cast a spell, note the first letter of its artist's name. If that letter wasn't already noted, put a +1/+1 counter on Abstract Iguanart.
The first letter of the artist’s name is the first letter of how that artist is credited. For example, the D in Deruchenko Alexander, the B in Brom, or the C in Claymore J. Flapdoodle.
If no artist is listed, no letters are noted. You won’t put a +1/+1 counter on Abstract Iguanart.