Whenever a Dragon you control attacks, bolster 2. (Choose a creature with the least toughness among creatures you control and put two +1/+1 counters on it.)
Cast Dromoka, swing with Dragons to bolster +1/+1 counters across your team while leveraging GW's strong ramp and removal-resistant beaters. Build a wide-and-tall counters board, then overrun the table with anthems and trample. Lifegain and big bodies keep you stable while you grind out advantage.
Hard to interact with: Dromoka can't be countered and the bolster ability auto-grows your board every combat
GW gives access to the best ramp, lifegain, and efficient white removal
Counters synergies scale beautifully with proliferate and doublers
Flying 5/5 commander pressures life totals immediately
Bolster only triggers off Dragon attackers, narrowing your aggro shell
No card advantage built into the commander; can run out of gas
Board wipes are devastating to a counters-go-wide strategy
Legendary Creature — Dragon
