Haven of the Spirit Dragon

: Add .
: Add one mana of any color. Spend this mana only to cast a Dragon creature spell.
, , Sacrifice Haven of the Spirit Dragon: Return target Dragon creature card or Ugin planeswalker card from your graveyard to your hand.

Morph

(You can cover a face-down creature with this reminder card.
A card with morph can be turned face up any time for its morph cost.)

Boltwing Marauder

Flying
Whenever another creature you control enters, target creature gets +2/+0 until end of turn.

Warbringer

Dash costs you pay cost less (as long as this creature is on the battlefield).
Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it’s returned from the battlefield to its owner’s hand at the beginning of the next end step.)

Boltwing Marauder

Flying
Whenever another creature you control enters, target creature gets +2/+0 until end of turn.

Wild Slash

Ferocious — If you control a creature with power 4 or greater, damage can’t be prevented this turn.
Wild Slash deals 2 damage to any target.

Ugin, the Spirit Dragon

+2: Ugin, the Spirit Dragon deals 3 damage to any target.
−X: Exile each permanent with mana value X or less that’s one or more colors.
−10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield.

Whisperwood Elemental

At the beginning of your end step, manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it’s a creature card.)
Sacrifice Whisperwood Elemental: Until end of turn, face-up nontoken creatures you control gain “When this creature dies, manifest the top card of your library.”

Manifest

(You can cover a face-down manifested creature with this reminder card.
A manifested creature card can be turned face up any time for its mana cost. A face-down card can also be turned face up for its morph cost.)

Temur War Shaman

When Temur War Shaman enters, manifest the top card of your library. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it’s a creature card.)
Whenever a permanent you control is turned face up, if it’s a creature, you may have it fight target creature you don’t control.

Fell the Mighty

Destroy all creatures with power greater than target creature’s power.

Wurmcoil Engine

Deathtouch, lifelink
When Wurmcoil Engine dies, create a 3/3 colorless Phyrexian Wurm artifact creature token with deathtouch and a 3/3 colorless Phyrexian Wurm artifact creature token with lifelink.

Phalanx Leader

Heroic — Whenever you cast a spell that targets Phalanx Leader, put a +1/+1 counter on each creature you control.

Devil’s Play

Devil’s Play deals X damage to any target.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Sagu Mauler

Trample, hexproof
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Lens of Clarity

You may look at the top card of your library and at face-down creatures you don’t control any time.

Trap Essence

Counter target creature spell. Put two +1/+1 counters on up to one target creature.

Bloodfire Expert

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Trail of Mystery

Whenever a face-down creature you control enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Whenever a permanent you control is turned face up, if it’s a creature, it gets +2/+2 until end of turn.

Thousand Winds

Flying
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Thousand Winds is turned face up, return all other tapped creatures to their owners’ hands.