Underworld Breach (Promo Pack) [Theros Beyond Death Promos] Mouse Soldier you may attach it to

you may attach it to target creature you control

{1}{G}: Put a +1/+1 counter on target creature

Set: Outlaws of Thunder Junction Prerelease Promos Type: Instant Rarity: Rare Cost: {U} Spree (Choose one or more additional costs

In its heart lies the secret of immortality

Underworld Breach (Promo Pack) [Theros Beyond Death Promos] Mouse Soldier you may attach it toSet: Theros Beyond Death Promos Type: Enchantment Rarity: Rare Cost: {1}{R} Each nonland card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.) At the beginning of the end step, sacrifice Underworld Breach.