Destroy target artifact or enchantment.

First strike
Firebending X, where X is the number of experience counters you have. (Whenever this creature attacks, add X . This mana lasts until end of combat.)
Whenever you cast a spell during combat, you get an experience counter.

Whenever a creature attacks you or a planeswalker you control, that creature's controller mills two cards.

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.

Equipped creature gets +3/+0 and has trample and lifelink.
Equip

You may have this enchantment enter as a copy of any artifact or enchantment on the battlefield.

Whenever you draw your second card each turn, create a 1/1 blue Illusion creature token with "This token gets +1/+0 for each other Illusion you control."
Whenever an Illusion you control dies, you may put a permanent card with mana value less than or equal to that creature's power from your hand onto the battlefield.

Flying, trample
When RMS Titanic deals combat damage to a player, sacrifice it and create that many Treasure tokens.
Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)

At the beginning of your upkeep, you may put a soot counter on this artifact.
At the beginning of each player's upkeep, that player sacrifices a permanent of their choice for each soot counter on this artifact.

+1: Target creature you control gains deathtouch and lifelink until end of turn. If it's a Vampire, put a +1/+1 counter on it.
+1: You may sacrifice a Vampire. When you do, Sorin deals 3 damage to any target and you gain 3 life.
−3: You may put a Vampire creature card from your hand onto the battlefield.

Double strike, indestructible
Oketra can't attack or block unless you control at least three other creatures.
: Create a 1/1 white Warrior creature token with vigilance.

: You may return another creature you control to its owner's hand. If you do, this creature gains indestructible until end of turn.

You may look at the top card of your library any time.
You may cast artifact spells and colorless spells from the top of your library.
, Pay 1 life: Exile the top card of your library.

, Sacrifice an artifact: Target player mills three cards.
Whenever an artifact enters, you may untap this artifact.

When this creature enters, each player chooses a creature type and returns any number of cards of that type from their graveyard to their hand.

Enchant creature
Enchanted creature has infect.
At the beginning of your upkeep, put a -1/-1 counter on enchanted creature.
When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

This artifact enters with three wish counters on it.
, , Remove a wish counter from this artifact: Search your library for a card, put it into your hand, then shuffle. An opponent gains control of this artifact. Activate only during your turn.

Each creature assigns combat damage equal to its toughness rather than its power.

When this creature enters, choose a letter. For each creature you control that has the chosen letter in its name, you gain 1 life and each opponent loses 1 life.

0: Roll a six-sided die.
1 or 2 — [+2], then create two 1/1 green Squirrel creature tokens. They gain haste until end of turn.
3 — [−1], then return a card with mana value 2 or less from your graveyard to your hand.
4 or 5 — Comet deals damage equal to the number of loyalty counters on him to a creature or player, then [−2].
6 — [+1], and you may activate Comet's loyalty ability two more times this turn.