donna noble mtg card (surge foil) (extended art) - Doctor Who Varianten Donna Noble • Universes Beyond:

Shrieking Drake, Ornithopter, and Intruder Alarm generate infinite casts/enters triggers for cards like Beast Whisperer and Sage's Row Denizen, as well as infinite creature-only mana

I'm over here sinning with T1 Entomb Sire of Insanity, T2 Animate Dead so I'm gonna have to pass on the "what is a fair return on 2 cards and 3 mana" question, because my perspective is way different than most here prolly since I like a little busted-ness here and there and I am a firm doubter of Tinker's appropriateness for non-powermax lists

Lets move on to some less obvious cards in the same vein, possibly ones that dont require infinite mana

We're going to get so much value out of every populate card that they won't know what hit them