Opal Acrolith [Urza's Saga] Common When Arbiter of Knollridge enters

When Arbiter of Knollridge enters the battlefield

Set: Rivals of Ixalan Type: Instant Rarity: Rare Cost: {2}{U} Exile target nonland permanent

You can only control 1 face-up "Red Duston"

Set: Shining Victories Card type: Xyz/Effect Monster Rarity: Super Rare Attack: 2600 Defense: 2200 2 or more Level 7 LIGHT Insect-Type monsters You can also Xyz Summon this card by detaching 2 Xyz Materials from a Rank 5 or 6 Insect-Type Xyz Monster you control

Opal Acrolith [Urza's Saga] Common When Arbiter of Knollridge entersSet: Urza's Saga Type: Enchantment Rarity: Uncommon Cost: {2}{W} Whenever an opponent casts a creature spell, if Opal Acrolith is an enchantment, Opal Acrolith becomes a 2 4 Soldier creature. {0}: Opal Acrolith becomes an enchantment.