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

Add in a few flicker effects to reuse your best ETB triggers once you get going, and your opponents wont know what hit them until its too late

You can search your library for any dragon at instant speed, reveal it, and put it into your hand, giving you the perfect threat or answer depending on the situation

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