Mountain

Time Walk

Mox Emerald

Recall

Discard X cards, then return a card from your graveyard to your hand for each card discarded this way. Exile Recall.

Disintegrate

Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

Counterspell

Mana Flare

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Mana Drain

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

Volcanic Island

Timetwister

Each player shuffles their hand and graveyard into their library, then draws seven cards. (Then put Timetwister into its owner's graveyard.)

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Strip Mine

{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.

Boomerang

Return target permanent to its owner's hand.

Mox Pearl

Spell Blast

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

Ancestral Recall

Mox Sapphire

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.