Recoil is a great card and the first on this list which really deserves a cube slot
If your turn has multiple combat phases, Ursine Monstrosity's last ability triggers at the beginning of each of them
Or you can phase them out with Teferi's Protection or give them indestructible for free if you control your Commander with the Maneuver above
The addition of Red to the possibilities means that we can take advantage of cards like Devastating Summons, Feldon of the Third Path, Flameshadow Conjuring, and Godsire to create either massive creature tokens or copies of tokens that were meant to only last the turn, but can now stick around
With a mix of commons and uncommons, you'll discover a wide range of spells, creatures, artifacts, and more