Cavern of Souls - [Foil] The Lost Caverns of Ixalan (LCI)As Cavern of Souls enters the battlefield, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

We can ask no less of ourselves

" explained Urza

Foretell {G} (During your turn

Whenever a creature with power 4 or greater enters the battlefield under your control

"Long have I wandered by roads forgotten

trample Whenever this creature mutates

Whenever an enchantment you control is put into a graveyard from the battlefield

Whenever Ghastlord of Fugue deals combat damage to a player

then roll a d20

• 1x Halo Foil Nezahal

or land until end of turn

If that spell's mana value is 10 or greater