The partner pair is Trynn, Champion of Freedom and Silvar, Devourer of the Free
Their only problem is they each can only be activated once per turn, and while some cards like Freed from the Real and Pemmins Aura are solid choices, both of which equate to basically pay one blue mana to commit a crime when attached to a pinger
#8: Combustible Gearhulk / Verdurous Gearhulk Oh, youre laughing now, but believe me when I say the kind of deck that this creature goes in is marvelous
Mike Elliott (the design team for Ravnica was Mike Elliott, Aaron Forsythe, Tyler Bielman, Brian Tinsman, and myself) liked the idea of spells that could affect your whole army, so he came up with a mechanic he called radiant (Mike called the mechanic "radiant" but we would change it to a noun in playtest)
Mustard has a snazzy anthem effect that gives all your other Soldiers vigilance, haste, and trample
Modern Horizons 2 Variants To view the regular cards, check out our Modern Horizons 2 Card Image Gallery