If you manage to do all four in a single turn, you can also transform Avatar Aang into Aang, Master of Elements a flying creature that reduces spell costs significantly, and lets you transform back for life gain, card draw, counters, and damage
However, keep in mind that you can only have one active Pokemon fighting and another five on the bench at the same time
That said he is not all that exciting, the +1/+1 buff is no way near as good as something like a Crusade as it is harder to put to good use and easier to remove from play for three and not two mana
A cliff once rose from the surf hereuntil Bjora Dawn-Greeter declared that it was blocking her view and pulled it down bare-handed. Iskene, Kannah storyteller Illustrated by Sarah Finnigan Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Also, I want to highlight the likes of Eternal Witness or Regrowth because these technically fit into this category