Marsh Flats [Modern Masters 2017] CRU124 Whenever an opponent casts a

Whenever an opponent casts a creature or planeswalker spell with the same name as a card in their graveyard

{T}: Target land becomes a Forest until Gaea's Liege leaves the battlefield

You've failed yourself

Set: Kaladesh Inventions Type: Artifact — Equipment Rarity: Mythic Cost: {3} Equipped creature gets +2/+2 and has protection from white and from black

you cannot get hold of the tiger's cubs

Marsh Flats [Modern Masters 2017] CRU124 Whenever an opponent casts aSet: Modern Masters 2017 Type: Land Rarity: Rare {T}, Pay 1 life, Sacrifice Marsh Flats: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle your library.