Cool deck

This looks like a 5-color Commander good-stuff deck centered on +1/+1 counters, creature value, and board-wide growth. Cards like Corpsejack Menace, Forgotten Ancient, Swarm Shambler, Ranger Class, Ridgescale Tusker, Verdurous Gearhulk, and Incremental Growth suggest the main plan is to build a board of creatures, stack counters efficiently, and turn them into a threatening army.

The deck supports that plan with ramp and fixing from Harrow, Roiling Regrowth, Faeburrow Elder, Hope Tender, and various multicolor lands, while using flexible interaction like Oblivion Ring, Imprisoned in the Moon, Dromoka’s Command, Mind Control, and Blue Sun’s Twilight to answer threats. It likely wins through combat by going tall and wide, then finishing with pump effects such as Overcome, Exponential Growth, Engineered Might, or Kamahl’s Will. Overall, it’s a casual 5-color counters/midrange Commander deck that leverages synergistic creatures and broad utility rather than a single tight combo.