Counter target spell. Create X 1/1 colorless Thopter artifact creature tokens with flying, where X is that spell's mana value.

Magecraft — Whenever you cast or copy an instant or sorcery spell, draw a card.

Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.

Exile the top X cards of your library. Until the end of your next turn, you may play those cards.

Choose one. If you control a commander as you cast this spell, you may choose both instead. • Target player draws X cards. • Target player mills twice X cards.

Draw X cards. If X is 10 or more, instead shuffle your graveyard into your library, draw X cards, untap up to five lands, and you have no maximum hand size for the rest of the game. Exile Finale of Revelation.

Sacrifice X lands. For each land sacrificed this way, draw a card. You may play X additional lands this turn. Lands you control enter tapped this turn.

Exile the top seven cards of your library. Until end of turn, you may cast spells from among them. If this spell was cast from your hand, add ten mana of any one color.

Crackle with Power deals five times X damage to each of up to X targets.

Destroy any number of target creatures. For each creature destroyed this way, its controller creates a 4/4 red Dragon creature token with flying.

Create a token that's a copy of target creature you control, except the token has flying and it isn't legendary.

Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.) Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.

When you next cast an instant or sorcery spell this turn, copy that spell X times. You may choose new targets for the copies.

For each creature target player controls, create a token that's a copy of that creature.

Create two 1/1 red Goblin creature tokens.

Create X 1/1 red Elemental Cat creature tokens with haste. Exile them at the beginning of the next end step. Flashback—{R}{R}, Sacrifice X Mountains. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create X 1/1 red Goblin creature tokens.

Create three 1/1 red Goblin creature tokens.

As an additional cost to cast this spell, sacrifice an artifact. Create three 1/1 red Goblin creature tokens.

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Draw X cards, then discard X cards. Create a 1/1 white Spirit creature token with flying for each card type among cards discarded this way.

Create a tapped 2/2 black Zombie creature token for each instant and sorcery card in your graveyard.

Create five 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this token: Add {C}."

Tempting offer — Create X 1/1 red Elemental creature tokens with haste. Each opponent may create X 1/1 red Elemental creature tokens with haste. For each opponent who does, create X 1/1 red Elemental creature tokens with haste.

({T}: Add {U}.)

{T}: Add one mana of any color in your commander's color identity.

{T}: Add one mana of any color in your commander's color identity. Sacrifice this artifact: Draw a card.

{T}: Add one mana of any color that a land an opponent controls could produce.

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

{1}, {T}: Add {U}{R}.

Choose one — • Tap X target permanents. • Untap X target permanents.

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

{T}: Add {C}{C}.

This creature gets +1/+0 for each artifact you control. Magecraft — Whenever you cast or copy an instant or sorcery spell, create a Treasure token.

{T}: Add {C}. {T}: Add {U} or {R}. This artifact deals 1 damage to you.