The ability triggers anytime you deal combat damage no limits like once per combat or once per opponent. Whats more, he has this text on either side of his transformation, ensuring youll always draw cards provided you can get through
Let's say that you build a deck where your only creatures are one copy of Street Wraith and two copies of Emrakul, the Aeons Torn (just in case you happen to draw one of them)
I mean, sure, youve got Rekindling Phoenix and Glorybringer or whatever, but to just shut off the vast majority of creatures indefinitely
Its also cool regardless of whether you play Magic or not, which is a plus in my book
Consistent ways to pop out fliers are great reasons to keep a card around
In the past 3 weeks I've spent well over 26 hours (I kept track) researching Pokemon and Pokemon cards