Energy Tap

Tap target untapped creature you control. If you do, add an amount of {C} equal to that creature's mana value.

Rewind

Counter target spell. Untap up to four lands.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Gilded Lotus

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Fiery Inscription

When this enchantment enters, the Ring tempts you.
Whenever you cast an instant or sorcery spell, this enchantment deals 2 damage to each opponent.

Blasphemous Edict

You may pay {B} rather than pay this spell's mana cost if there are thirteen or more creatures on the battlefield.
Each player sacrifices thirteen creatures of their choice.

Rakdos Signet

Counterspell

Fire Diamond

This artifact enters tapped.
{T}: Add {R}.

Goblin Electromancer

Instant and sorcery spells you cast cost {1} less to cast.

Bitter Triumph

As an additional cost to cast this spell, discard a card or pay 3 life.
Destroy target creature or planeswalker.