mtg green stax cards Rocco Cabaretti Caterer Altered Art Magic Card Commander CEDH Legendary Whenever a player casts a noncreature spell The Dirty Dozen — 12

Aether Chaser Aether Herder Aether Inspector Aether Poisoner Aether Spike Aether Swooper Aether Theorist Aetherstream Leopard Attune with Aether Conduit Goblin Consulate Turret Cyclops Superconductor Die Young Eddytrail Hawk Electrozoa Energy Refractor Galvanic Discharge Glassblower's Puzzleknot Hexgold Slith Highspire Infusion Hightide Hermit Inspired Inventor Inventor's Axe Jolted Awake Live Fast Reservoir Walker Riddle Gate Gargoyle Riparian Tiger Sage of Shaila's Claim Shipwreck Moray Smelted Chargebug Solstice Zealot Spontaneous Artist Tempest Harvester Thriving Grubs Thriving Ibex Thriving Rats Thriving Rhino Thriving Skyclaw Thriving Turtle Tune the Narrative Woodweaver's Puzzleknot

You can even pay a little extra to gain a small creature body on top of the exchange, or some other kind of permanent advantage

Armadillo Cloak Invasion draft had five two-color combinations, and green-white was essentially Armadillo Cloak

And it has flashback, so you can do it twice

Useful as disruption, as a sac outlet, as a thing you can tutor into your bin, as a way to get stuff from your hand into the bin