Modern Horizons 3

Flash Enchant creature Enchanted creature loses all abilities and has base power and toughness 1/1. {2}{C}: Exile enchanted creature.

{T}: Add {C}. Spend this mana only to cast a colorless spell or to activate an ability.

When Serum Visionary enters the battlefield, draw a card, then scry 2.

Whenever another nontoken permanent you control leaves the battlefield, choose one that hasn't been chosen this turn. Create a creature token with ...

You may have Copycrook enter the battlefield as a copy of any creature on the battlefield, except it has "Whenever this creature attacks, it conniv...

When Breya, Etherium Shaper enters the battlefield, create two 1/1 blue Thopter artifact creature tokens with flying. {2}, Sacrifice two artifacts:...

Enchant player At the beginning of enchanted player's postcombat main phase, there is an additional beginning phase after this phase. (The end step...

Draw two cards. Then discard a card at random unless you pay {E}{E} (two energy counters).

{T}: You get {E}{E} (two energy counters). {T}, Pay {E}{E}: Tap target creature. {T}, Pay {E}{E}{E}: Draw a card. Pay {E}{E}{E}{E}: Bespoke Battlew...

Lifelink Whenever Horrid Shadowspinner attacks, you may draw cards equal to its power. If you do, discard that many cards.

If you would get one or more {E} (energy counters), you get that many plus one {E} instead. {T}: Draw a card. Activate only if you've paid or lost ...

Flying When Shrieking Drake enters the battlefield, return a creature you control to its owner's hand.

Landfall — Whenever a land enters the battlefield under your control, you get {E} (an energy counter). {T}, Pay six {E}: Draw three cards.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Until your next turn, whenever a creature attacks you ...

Tap all creatures target player controls. You may pay X {E}, then choose up to X creatures tapped this way. Put a stun counter on each of them. (If...

Bestow {1}{U} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attache...

You may have Estrid's Invocation enter the battlefield as a copy of an enchantment you control, except it has "At the beginning of your upkeep, you...

When Reef Worm dies, create a 3/3 blue Fish creature token with "When this creature dies, create a 6/6 blue Whale creature token with 'When this cr...

Target player draws two cards. Flashback—{1}{U}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever Psychic Frog deals combat damage to a player or planeswalker, draw a card. Discard a card: Put a +1/+1 counter on Psychic Frog. Exile thre...

You may sacrifice a nontoken blue creature rather than pay this spell's mana cost. Counter target spell.

Choose target spell, then flip a coin. If you win the flip, gain control of that spell and you may choose new targets for it. If you lose the flip,...

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Ward {4} Whene...

Flash Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies. Copies become to...