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

Destroy all nonartifact creatures.

Destroy all creatures with power 3 or greater.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Exile all creatures except those that share a creature type with a creature that convoked this spell, all artifacts, and all enchantments.

Return all artifact, enchantment, and planeswalker cards from your graveyard to the battlefield.

Gain control of target permanent until end of turn. Untap it. It gains haste until end of turn.

Fuse (You may cast one or both halves of this card from your hand.)

Create X 1/1 white Pegasus creature tokens with flying, where X is your life total.

( can be paid with any two mana or with . This card's mana value is 10.)

Other Scarecrow creatures you control get +1/+1.

Whenever another Scarecrow you control enters, destroy target permanent.

Target player's life total becomes 20.

You gain 20 life.

Suspend 10— (Rather than cast this card from your hand, you may pay and exile it with ten time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

Put a +1/+1 counter on each attacking creature you control.

When you unlock this door, destroy all creatures with power 3 or greater.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Vigilance, reach, trample

When Zacama enters, if you cast it, untap all lands you control.

: Zacama deals 3 damage to target creature.

: Destroy target artifact or enchantment.

: You gain 3 life.

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Flying

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card with lesser mana value. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

You may pay rather than pay this spell's mana cost.

Trample

At the beginning of your upkeep, you may return target artifact card from your graveyard to the battlefield.

Gallifrey Falls deals 4 damage to each creature. If a creature dealt damage this way would die this turn, exile it instead.

Fuse (You may cast one or both halves of this card from your hand.)

Flying

As Iona enters, choose a color.

Your opponents can't cast spells of the chosen color.

Flying, trample, rampage 2

: Elder Dragons you control get +7/+7 until end of turn.

At the beginning of your upkeep, sacrifice Eldest Dragon Highlander unless you pay .

Eminence — As long as The Ur-Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost less to cast.

Flying

Whenever one or more Dragons you control attack, draw that many cards, then you may put a permanent card from your hand onto the battlefield.