Clarion Conqueror blocks their dragons well and shuts off Voice of Victory's mobilize is a triggered ability so it still triggers, but it does stop activated abilities on their Equipment-adjacent cards and planeswalker-style threats. Seam Rip exiles cheap aggressive threats like Momo or Sarkhan, Dragon Ascendant before they snowball. Starscape Cleric can't block, which is dangerous against this aggressive deck, so trim it. Liliana the Faultless is too fragile against their burn and aggressive creatures.