Elspeth, Knight-Errant [ALA - 9] Theros Beyond Death Rules Text Contains: When Prison

Rules Text Contains: When Prison Realm enters the battlefield

Rules Text Contains: Target opponent reveals his or her hand

Draconic Intervention deals X damage to each non-Dragon creature

the player puts the card into his or her graveyard and Shapeshifter's Marrow becomes a copy of that card

Whenever a creature is put into a graveyard from play

Elspeth, Knight-Errant [ALA - 9] Theros Beyond Death Rules Text Contains: When PrisonRarity: M #: 9 Creature Type or Sub Type: Planeswalker Elspeth Rules Text Contains: [+1]: Put a 1 1 white Soldier creature token onto the battlefield. [+1]: Target creature gets +3 +3 and gains flying until end of turn. [ 8]: For the rest of the game, artifacts, creatures, enchantments, and lands you control are indestructible.