
Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)
At the beginning of combat on your turn, the next time target creature would deal combat damage to one or more players this combat, prevent that damage. If damage is prevented this way, create that many 1/1 colorless Phyrexian Mite artifact creature tokens with toxic 1 and "This token can't block."
Ria Ivor turns one big attacker into an army of toxic Mites by converting that creature's combat damage into 1/1 toxic tokens each combat, then buffs the whole team with battle cry. You build a wide aggressive board, pump a single creature huge, prevent its damage on Ria's trigger to spawn a swarm of Mites, and swing for poison and damage. The deck snowballs through repeated combats, anthems, and token doublers to overwhelm tables fast.
Add token doublers (Anointed Procession, Mondrak) and anthems (Coat of Arms, Intangible Virtue) to maximize Mite output and lethality. Include extra-combat enablers (Combat Celebrant, Aurelia) and protection for Ria (Swiftfoot Boots, Teferi's Protection) so combats keep happening. Round it out with Skullclamp and Bitterblossom for card flow and proactive token generation independent of combat.
The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.
→ Infinite turns, Lock
Combos via Commander Spellbook.
Same color identity (BW), by popularity.