
Whenever you tap an untapped creature an opponent controls, you may pay . When you do, choose one —
• Create a 4/4 white and blue Elemental creature token.
• Put a +1/+1 counter on each creature you control.
• Scry 2, then draw a card.
Hylda rewards you for tapping down your opponents' creatures: every untapped creature you tap triggers her, and for you snowball into 4/4 Elementals, anthem counters, or card draw. You stall the board with mass-tappers and ramp into repeatable tap effects, then convert those triggers into an overwhelming army or a wide counter-pumped board that closes the game.
Add repeatable tappers like Icy Manipulator, Sword of the Meek/Thousand-Year Elixir style untappers, and mass-tap spells (Sleep, Cryptic Command, Dazzling Reflection-style) to maximize triggers per turn. Improve ramp with mana rocks (Arcane Signet, Talisman of Progress) so you can pay repeatedly, and protect Hylda with Swiftfoot Boots and Heroic Intervention. Finish faster by leaning on anthem doublers like Doubling Season for the counter and token modes, plus an overrun effect like Craterhoof or Finale of Glory equivalents.
The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.
→ Tap all creatures opponents control during each turn
→ Infinite colorless mana, Infinite creature tokens, Infinite death triggers
→ Tap all creatures opponents control during each turn
→ Tap all creatures opponents control during each turn
→ Infinite sacrifice triggers, Infinite untap of creatures, Infinite death triggers
Combos via Commander Spellbook.
Same color identity (UW), by popularity.