Enchant artifact or creature
Enchanted permanent doesn't untap during its controller's untap step.

Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Tap target creature.
Metalcraft — If you control three or more artifacts, exile that creature.

This creature has flying as long as it's being held above the battlefield.

This enchantment enters with a doom counter on it.
Whenever you cast a spell with mana value equal to the number of doom counters on this enchantment, this enchantment deals that much damage to any target. Then put a doom counter on this enchantment.

Enchant creature
At the beginning of the upkeep of enchanted creature's controller, put a -0/-1 counter on that creature.
When enchanted creature dies, that creature's controller chooses a creature that this card could enchant. If the player does, return this card to the battlefield under your control attached to that creature. If they don't, return this card to the battlefield under your control as a non-Aura enchantment. It loses "enchant creature" and gains "At the beginning of that player's upkeep, this enchantment deals 1 damage to that player."

Whenever you cast your first spell during each of your turns, exile the top card of target opponent's library and create a Treasure token. Then you may cast the exiled card without paying its mana cost if it's a spell with mana value less than the number of artifacts you control. If you don't cast it this way, you may cast it this turn.

, Exile an Elf card from your graveyard: This creature gets +3/+3 until end of turn.

Reach
Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)
At the beginning of combat on your turn, other creatures you control with power 4 or greater gain trample and haste until end of turn.

Menace
Whenever this creature enters or attacks, create two 1/1 black Rat creature tokens with "This token can't block." Then if you control five or more Rats, each Rat you control gets +2/+0 until end of turn.

Vigilance
Whenever this creature attacks, you may tap another untapped creature you control. If you do, this creature can't be blocked this turn.

Creatures you control get +1/+0 until end of turn.

When this Equipment enters, attach it to target creature you control.
Equipped creature gets +2/+0.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control.
Draw a card.

Flash
Enchant creature
When this Aura enters, enchanted creature gains first strike until end of turn.
Enchanted creature gets +2/+0.

Body Thief — When you cast this spell, you may exile a creature you control and put a takeover counter on it.
You may have The Master enter as a copy of a creature card in exile with a takeover counter on it.

Sketch and Lore — , : Target opponent exiles cards from the top of their library until they exile an instant, sorcery, or creature card. You may cast that card without paying its mana cost. If you cast a creature spell this way, it gains haste and "At the beginning of the end step, sacrifice this creature." Activate only as a sorcery.

At the beginning of combat on your turn, you may have target creature get +2/+0 until end of turn.

When this creature dies, create a 2/1 black Cat creature token.

At the beginning of each player's draw step, that player draws an additional card.
Each player may play an additional land on each of their turns.