Channel

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

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.

Contract from Below

Remove Contract from Below from your deck before playing if you're not playing for ante.
Discard your hand, ante the top card of your library, then draw seven cards.

Black Lotus

{T}, Sacrifice this artifact: Add three mana of any one color.

Ancestral Recall

Mox Emerald

Mox Ruby

Underground Sea

Volcanic Island

Time Walk

Dark Ritual

Sol Ring

Mox Sapphire

Mox Pearl

Birds of Paradise

Regrowth

Return target card from your graveyard to your hand.

Wheel of Fortune

Each player discards their hand, then draws seven cards.

Mox Jet

Tropical Island

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Timetwister

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