
Whenever you put one or more time counters on a permanent you control, create a 1/1 white Soldier creature token.
Whenever Kate Stewart attacks, you may pay . If you do, attacking creatures get +X/+X until end of turn, where X is the number of time counters among permanents you control.
Kate Stewart turns time counters into a token army: every time you put time counters on a permanent (suspend, vanishing, fading, or proliferate-style effects) you spawn 1/1 Soldiers, then go wide and swing. Her attack trigger lets you dump to pump the whole team by the number of time counters you control, threatening lethal alpha strikes. Turn to turn you suspend cheap threats and seed counters, build a board of tokens, and use Jeskai interaction to protect the engine until you crash in.
Add mana acceleration and cost reducers (Sol Ring, Smothering Tithe, Jeska's Will) to make her pump castable the same turn you swing, and lean harder into proliferate engines like Karn's Bastion and Evolution Sage to maximize triggers. Round out with token doublers, a Craterhoof-style finisher, and Jeskai staple interaction (Cyclonic Rift, Teferi's Protection, Swords to Plowshares) to protect the board against the sweepers that punish go-wide decks.
The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.
→ Draw the game, Infinite creature tokens, Infinite ETB
→ Infinite ETB, Infinite creature tokens, Infinite mana creatures you control can produce
→ Infinite ETB, Infinite creature tokens, Infinite mana creatures you control can produce
→ Infinite ETB, Infinite creature tokens, Infinite mana creatures you control can produce
→ Infinitely large creatures you control until end of turn, Infinite ETB, Infinite creature tokens
Combos via Commander Spellbook.
Same color identity (RUW), by popularity.