These spells can turn a group of weak creatures into a powerful force that can defeat your opponents in a single combat phase and win the game
Hail, Caesar Commander (1) Creature (31) Butch DeLoria, Tunnel Snake Gary Clone General's Enforcer Impassioned Orator MacCready, Lamplight Mayor Securitron Squadron Aradesh, the Founder Boomer Scrapper Colonel Autumn Craig Boone, Novac Guard ED-E, Lonesome Eyebot Elder Arthur Maxson Kellogg, Dangerous Mind Morbid Opportunist Mr
We ended up creating a mechanic that borrowed from two previous popular mechanics: evoke creatures and Adventure spells
The cost is a bit steep, but you can pinpoint remove exactly what you don't want on the table, and flexibly use this during a main phase or an end step depending on what is necessary
The artifacts or creatures you untap could be used for waterbending, but my mind can't help but wander to the rocks, dorks, and cards with the best activated abilities as targets to untap