Creatures you control have haste.
Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order. Then do it again.)

Whenever a player casts a blue spell, you may gain 1 life.

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.)
When this creature enters, return target creature an opponent controls to its owner's hand.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Return target permanent to its owner's hand.

Target creature gets -3/-0 until end of turn.
Target creature gets -0/-3 until end of turn.

Shroud (This creature can't be the target of spells or abilities.)
Threshold — This creature gets +2/+2 as long as there are seven or more cards in your graveyard.

Flying
: This creature gets +1/+0 until end of turn.
Whenever this creature deals combat damage to a player, you may have it deal that much damage to target creature that player controls.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

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When this enchantment enters, exile all creatures you control. Then create that many 5/5 red Dragon creature tokens with flying.
When this enchantment leaves the battlefield, sacrifice all Dragons you control. Then return the exiled cards to the battlefield under your control.

Flying
Will of the council — When this creature enters, starting with you, each player votes for an artifact, creature, or enchantment card in your graveyard. Return each card with the most votes or tied for most votes to your hand.

Counter target creature spell. Essence Backlash deals damage equal to that spell's power to its controller.

Target creature has base power and toughness 5/5 until end of turn. The Ring tempts you.

Enrage — Whenever this creature is dealt damage, untap target permanent.

Target creature gets +2/+2 until end of turn. If it's blocking, instead put two +1/+1 counters on it.
Cycling (, Discard this card: Draw a card.)

First Contact — Whenever Overseer of Vault 76 or another creature you control with power 3 or less enters, put a quest counter on Overseer of Vault 76.
At the beginning of combat on your turn, you may remove three quest counters from among permanents you control. When you do, put a +1/+1 counter on each creature you control and they gain vigilance until end of turn.

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, Pay 1 life: Add one mana of any color. Activate only if you control an artifact.

When this creature enters, amass Zombies 2. (Put two +1/+1 counters on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)
Zombie tokens you control have flying.

Flying
: This creature gains first strike until end of turn. ( can be paid with one mana from a snow source.)

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