Counter target spell unless its controller pays for each card in your graveyard.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Haste
As long as this card is in your graveyard and you control a Mountain, creatures you control have haste.

Enchant creature
When this Aura enters, tap enchanted creature and put X sleep counters on it.
Enchanted creature doesn't untap during its controller's untap step if it has a sleep counter on it.
At the beginning of the upkeep of enchanted creature's controller, remove a sleep counter from that creature.

This land enters tapped. As it enters, choose a color other than red.
: Add or one mana of the chosen color.

Enchant creature
Enchanted creature gets +2/-1.
Sacrifice this Aura: Enchanted creature and other creatures that share a creature type with it get +2/-1 until end of turn.

(: Add .)

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

Whenever a creature you control with mana value 5 or greater enters, you may attach this Equipment to it.
Equipped creature gets +4/+4.
Equip

Equipped creature gets +3/+3.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

When this creature enters, search your library for up to two basic land cards and reveal them, then roll a d20.
9 or less | Put those cards into your hand, then shuffle.
10—19 | Put one of those cards onto the battlefield tapped and the other into your hand, then shuffle.
20+ | Put those cards onto the battlefield tapped, then shuffle.

When this artifact enters, draw a card.
, : Add one mana of any color.

Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When this creature enters, choose beginning phase, first main phase, combat phase, postcombat main phase, or ending phase. Steal that phase from target player during their next turn. (That phase occurs as though it's your turn instead.)

Destroy target nonartifact creature.

Flying
: Create a 0/4 colorless Wall creature token with defender.
: Super-Skrull gets +4/+4 until end of turn.
: Super-Skrull deals 4 damage to target creature.
: Target player draws four cards.

Whenever this creature attacks or blocks, create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
Sacrifice two Foods: Draw a card.

: Add .
: Add or . This artifact deals 1 damage to you.

When this creature enters, each opponent exiles a card from their hand.
: This creature gets +1/+1 until end of turn.

Inspired — Whenever this creature becomes untapped, reveal the top card of your library and put that card into your hand. You lose life equal to that card's mana value.