King Narfi's Betrayal [Kaldheim Prerelease Promos] Clash of Rebellions You can only use 1

You can only use 1 "Nehshaddoll Genius" effect per turn

Those creatures gain trample until end of turn

also you cannot Special Summon monsters from the Extra Deck the turn you activate this card

You can only activate 1 "Living Fossil" per turn

Hard Hat Area assembles a number of Contraptions equal to the difference between those results

King Narfi's Betrayal [Kaldheim Prerelease Promos] Clash of Rebellions You can only use 1Set: Kaldheim Prerelease Promos Type: Enchantment Saga Rarity: Mythic Cost: {1}{U}{B} (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I Each player mills four cards. Then you may exile a creature or planeswalker card from each graveyard. II, III Until end of turn, you may cast spells from among cards exiled with King Narfi's Betrayal, and you may spend mana as though it were mana of any color to cast those