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.
Artista: Jaime Jones
Myr Sire
When Myr Sire dies, create a 1/1 colorless Phyrexian Myr artifact creature token.
Primeval Protector
This spell costs less to cast for each creature your opponents control.
When Primeval Protector enters the battlefield, put a +1/+1 counter on each other creature you control.
Temur Battle Rage
Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.
Sanguine Bond
Whenever you gain life, target opponent loses that much life.
Become Immense
Delve (Each card you exile from your graveyard while casting this spell pays for .)
Target creature gets +6/+6 until end of turn.
Temur Ascendancy
Creatures you control have haste.
Whenever a creature with power 4 or greater enters the battlefield under your control, you may draw a card.
Seething Song
Add .
Rupture Spire
Rupture Spire enters the battlefield tapped.
When Rupture Spire enters the battlefield, sacrifice it unless you pay .
: Add one mana of any color.
Rupture Spire
Rupture Spire enters the battlefield tapped.
When Rupture Spire enters the battlefield, sacrifice it unless you pay .
: Add one mana of any color.
Temur Battle Rage
Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.
Temur Battle Rage
Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.
Metalwork Colossus
This spell costs less to cast, where X is the total converted mana cost of noncreature artifacts you control.
Sacrifice two artifacts: Return Metalwork Colossus from your graveyard to your hand.
Heart of Kiran
Flying, vigilance
Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)
You may remove a loyalty counter from a planeswalker you control rather than pay Heart of Kiran’s crew cost.
Verdurous Gearhulk
Trample
When Verdurous Gearhulk enters the battlefield, distribute four +1/+1 counters among any number of target creatures you control.
Emeria, the Sky Ruin
Emeria, the Sky Ruin enters the battlefield tapped.
At the beginning of your upkeep, if you control seven or more Plains, you may return target creature card from your graveyard to the battlefield.
: Add .
Weatherlight
Flying
Whenever Weatherlight deals combat damage to a player, look at the top five cards of your library. You may reveal a historic card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. (Artifacts, legendaries, and Sagas are historic.)
Crew 3
Nissa Revane
+1: Search your library for a card named Nissa’s Chosen and put it onto the battlefield. Then shuffle your library.
+1: You gain 2 life for each Elf you control.
−7: Search your library for any number of Elf creature cards and put them onto the battlefield. Then shuffle your library.
Progenitus
Protection from everything
If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner’s library instead.
Sphinx Summoner
Flying
When Sphinx Summoner enters the battlefield, you may search your library for an artifact creature card, reveal it, and put it into your hand. If you do, shuffle your library.
Temur Battle Rage
Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.
Rupture Spire
Rupture Spire enters the battlefield tapped.
When Rupture Spire enters the battlefield, sacrifice it unless you pay .
: Add one mana of any color.
Myr Sire
When Myr Sire dies, create a 1/1 colorless Myr artifact creature token.
Temur Ascendancy
Creatures you control have haste.
Whenever a creature with power 4 or greater enters the battlefield under your control, you may draw a card.
Rupture Spire
Rupture Spire enters the battlefield tapped.
When Rupture Spire enters the battlefield, sacrifice it unless you pay .
: Add one mana of any color.