Tyvar Kell [Kaldheim Prerelease Promos] OP05-EN023 during either player's turn: You

during either player's turn: You can detach 3 Xyz Materials from this card

You may cast it without paying its mana cost if it's a creature spell that shares a creature type with a creature you control

the dwarven forces had reduced the mighty walls to mere rubble

Set: EX: Legend Maker Type: Colorless Rarity: Holo Rare Retreat cost: 0

or Special Summoned during the turn a Thunder monster's effect was activated in the hand

Tyvar Kell [Kaldheim Prerelease Promos] OP05-EN023 during either player's turn: YouSet: Kaldheim Prerelease Promos Type: Legendary Planeswalker Tyvar Rarity: Mythic Cost: {2}{G}{G} Elves you control have "{T}: Add {B}." +1: Put a +1 +1 counter on up to one target Elf. Untap it. It gains deathtouch until end of turn. 0: Create a 1 1 green Elf Warrior creature token. 6: You get an emblem with "Whenever you cast an Elf spell, it gains haste until end of turn and you draw two cards."