, Sacrifice this artifact: Exile target player's graveyard.
When this artifact is put into a graveyard from the battlefield, you may pay . If you do, draw a card.

Counter target spell unless its controller pays .

As long as there are two or more instant and/or sorcery cards in your graveyard, this creature gets +1/+0 and has haste. (It can attack and as soon as it comes under your control.)

As an additional cost to cast this spell, sacrifice a creature.
Destroy target creature.

Target creature gets +2/+1 and gains haste until end of turn. Scry 1.

Target attacking creature gets +3/+3 until end of turn. If it's an artifact creature, it gains trample until end of turn.

Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional .

Sacrifice this enchantment: Target creature gets +3/+3 until end of turn.

When this creature enters, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Prevent all damage that would be dealt by creatures this turn.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Target creature gets +2/+2 until end of turn.

Target creature gets +1/+2 and gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Kicker (You may pay an additional as you cast this spell.)
When this creature enters, if it was kicked, creatures you control get +1/+0 and gain haste until end of turn.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)

: Creatures you control get +1/+1 and gain vigilance until end of turn. Activate only during your turn. (Attacking doesn't cause them to tap.)

Flying

Target creature becomes red and gains haste until end of turn. (It can attack and this turn.)
Draw a card.

Whenever you cast a creature spell, tap target creature.

Devoid (This card has no color.)
Target creature can't be blocked this turn.
Draw a card.

: Creatures you control get +1/+1 until end of turn.

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

This creature gets +1/+0 as long as it's attacking.

Dead deals 2 damage to target creature.

Target creature gets +3/+3 until end of turn.

Firebolt deals 2 damage to any target.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Draw two cards, then discard two cards.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Put three -1/-1 counters on target creature with flying.
Cycling (, Discard this card: Draw a card.)

Put target card from your graveyard on top of your library.

Target creature gets +2/+2 and gains trample until end of turn.

Creatures you control gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)
Draw a card.

Choose one —
• Return target creature card from your graveyard to your hand.
• Return two target Pirate cards from your graveyard to your hand.

Enchant creature you control
When this Aura enters, target creature can't block this turn.
Enchanted creature gets +1/+1 and has haste. (It can attack and no matter when it came under your control.)

When this artifact enters or leaves the battlefield, exile the top card of your library. Until end of turn, you may play that card.
, Sacrifice this artifact: Create a 2/2 white Samurai creature token with vigilance. Activate only as a sorcery.

Until end of turn, target creature gains "When this creature dies, return it to the battlefield tapped under its owner's control with a +1/+1 counter on it."

Whenever another creature enters, you gain 1 life.