Blue spells you cast cost less to cast.

Menace
Paradox — Whenever you cast a spell from anywhere other than your hand, this creature deals 3 damage to any target. Then put a +1/+1 counter on this creature.
When this creature dies, it deals damage equal to its power to each opponent.

Choose two —
• Counter target spell.
• Return target permanent to its owner's hand.
• Tap all creatures your opponents control.
• Draw a card.

Other Horses you control have indestructible.
At the beginning of each end step, if you gained life this turn, create a 5/5 white Horse creature token.

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)
When this creature enters, target player gets four rad counters.
This creature can't be blocked as long as defending player has a rad counter.

Flying, lifelink
Whenever Aclazotz attacks, each opponent discards a card. For each opponent who can't, you draw a card.
Whenever an opponent discards a land card, create a 1/1 black Bat creature token with flying.
When Aclazotz dies, return it to the battlefield tapped and transformed under its owner's control.

Counter target spell.

, Sacrifice this artifact: The next time a source of your choice would deal damage to you this turn, prevent half that damage, rounded down.

Haste
Merry has first strike as long as it's equipped.
Whenever you attack with Merry and another legendary creature, draw a card.

Allons-y! — Whenever you attack, exile cards from the top of your library until you exile a nonland card. Put three time counters on it. If it doesn't have suspend, it gains suspend.
Timey-Wimey — : Time travel three times. Activate only as a sorcery. (For each suspended card you own and each permanent you control with a time counter on it, you may add or remove a time counter. Then do it two more times.)

(: Add .)

At the beginning of combat on your turn, create X tokens that are copies of another target creature you control, where X is one plus the number of instant and sorcery spells you've cast this turn. They gain haste. Exile them at the beginning of the next end step.

Whenever another creature enters, you gain 1 life.

At the beginning of your upkeep, if you control twenty or more creatures, you win the game.

Reach (This creature can block creatures with flying.)
Noncreature spells you cast cost less to cast.
Whenever you cast a noncreature spell, Longshot deals 2 damage to each opponent.

Until end of turn, permanents your opponents control gain "When this permanent deals damage to the player who cast Hellish Rebuke, sacrifice this permanent. You lose 2 life."

If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on that creature instead.

This land enters tapped unless you control two or more other lands.
: Add or .

When this creature enters, destroy target creature an opponent controls.

You may look at the top card of your library any time.
You may cast creature spells from the top of your library.
Creatures you control have ": Add one mana of any color."