Also, see Biotransference
This works as long as Marchesa, the Black Rose is in play
The 4-mana restriction to prevent you from drawing when an opponent plays a noncreature spell is so, so expensive that theres basically no way theyll even be able to pay
Ethan's Typhlosion has rather mediocre base damage, as its attack only deals 40 damage to start off, but its synergy with Ethan's Adventure makes it a powerful attacker later in game
You can build this as a high-powered combo deck with tutors, altars, and game-ending loops, or you can keep it as a more casual token/spellslinger deck that still has the ability to pop off in a huge way
In this deck, Barry will only be useful when used on Staraptor