Undead Sprinter

Creature spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a creature spell pays for 1 or one mana of that creature's color.) (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Creature spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a creature spell pays for 1 or one mana of that creature's color.) (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Whenever one or more non-Toy creatures you control attack a player, create a 1/1 white Toy artifact creature token. (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Whenever one or more non-Toy creatures you control attack a player, create a 1/1 white Toy artifact creature token. (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Lifelink Whenever one or more other creatures you control with power 2 or less enter, draw a card. This ability triggers only once each turn. When Enduring Innocence dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.)

Lifelink Whenever one or more other creatures you control with power 2 or less enter, draw a card. This ability triggers only once each turn. When Enduring Innocence dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.)

Flying When this creature enters, return an enchantment card from your graveyard to your hand or unlock a locked door of a Room you control. Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, create a 3/1 white Spirit creature token with flying.

T: Add G. T: Add W. Activate only if you control a Forest or a Plains.