Power Sink

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Unsummon

Return target creature to its owner's hand.

Mox Sapphire

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Flashfires

Ancestral Recall

Time Walk

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Sol Ring

Volcanic Island

Channel

Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add {C}.

Volcanic Eruption

Destroy X target Mountains. Volcanic Eruption deals damage to each creature and each player equal to the number of Mountains put into a graveyard this way.

Tropical Island

Regrowth

Return target card from your graveyard to your hand.

Forest

Counterspell

Island

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Mox Emerald

Taiga

Mountain

Meekstone

Creatures with power 3 or greater don't untap during their controllers' untap steps.

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.

Black Lotus

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

Nevinyrral's Disk

Nevinyrral's Disk enters tapped.
{1}, {T}: Destroy all artifacts, creatures, and enchantments.