
Elspeth, Storm Slayer | Legendary Planeswalker | Elspeth | If one or more tokens would be created under your control, twice that many of those tokens are created instead.
+1: Create a 1/1 white Soldier creature token.
0: Put a +1/+1 counter on each creature you control. Those creatures gain flying until your next turn.
−3: Destroy target creature an opponent controls with mana value 3 or greater. | Ekaterina Burmak

Smile at Death | Enchantment | | At the beginning of your upkeep, return up to two target creature cards with power 2 or less from your graveyard to the battlefield. Put a +1/+1 counter on each of those creatures. | Olivier Bernard

Taigam, Master Opportunist | Legendary Creature | Human Monk | Flurry — Whenever you cast your second spell each turn, copy it, then exile the spell you cast with four time counters on it. If it doesn't have suspend, it gains suspend. (At the beginning of its owner's upkeep, they remove a time counter. When the last is removed, they may play it without paying its mana cost. If it's a creature, it has haste.) | Joshua Raphael

Rot-Curse Rakshasa | Creature | Demon | Trample
Decayed (This creature can't block. When it attacks, sacrifice it at end of combat.)
Renew — {X}{B}{B}, Exile this card from your graveyard: Put a decayed counter on each of X target creatures. Activate only as a sorcery. | Chris Rahn

Dracogenesis | Enchantment | | You may cast Dragon spells without paying their mana costs. | Kai Carpenter

Stormscale Scion | Creature | Dragon | Flying
Other Dragons you control get +1/+1.
Storm (When you cast this spell, copy it for each spell cast before it this turn. Copies become tokens.) | Andrew Mar

Craterhoof Behemoth | Creature | Beast | Haste
When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control. | Magali Villeneuve

Jeskai Revelation | Instant | | Return target spell or permanent to its owner's hand. Jeskai Revelation deals 4 damage to any target. Create two 1/1 white Monk creature tokens with prowess. Draw two cards. You gain 4 life. | Igor Grechanyi

Shiko, Paragon of the Way | Legendary Creature | Spirit Dragon | Flying, vigilance
When Shiko enters, exile target nonland card with mana value 3 or less from your graveyard. Copy it, then you may cast the copy without paying its mana cost. (A copy of a permanent spell becomes a token.) | Victor Adame Minguez

All-Out Assault | Enchantment | | Creatures you control get +1/+1 and have deathtouch.
When this enchantment enters, if it's your main phase, there is an additional combat phase after this phase followed by an additional main phase. When you next attack this turn, untap each creature you control. | Joshua Cairos

Neriv, Heart of the Storm | Legendary Creature | Spirit Dragon | Flying
If a creature you control that entered this turn would deal damage, it deals twice that much damage instead. | Victor Adame Minguez

Betor, Kin to All | Legendary Creature | Spirit Dragon | Flying
At the beginning of your end step, if creatures you control have total toughness 10 or greater, draw a card. Then if creatures you control have total toughness 20 or greater, untap each creature you control. Then if creatures you control have total toughness 40 or greater, each opponent loses half their life, rounded up. | Alexander Ostrowski

Perennation | Sorcery | | Return target permanent card from your graveyard to the battlefield with a hexproof counter and an indestructible counter on it. | Eli Minaya

Death Begets Life | Sorcery | | Destroy all creatures and enchantments. Draw a card for each permanent destroyed this way. | Justin Hernandez & Alexis Hernandez

Teval, Arbiter of Virtue | Legendary Creature | Spirit Dragon | Flying, lifelink
Spells you cast have delve. (Each card you exile from your graveyard while casting those spells pays for {1}.)
Whenever you cast a spell, you lose life equal to its mana value. | Alexander Ostrowski

Dragonback Assault | Enchantment | | When this enchantment enters, it deals 3 damage to each creature and each planeswalker.
Landfall — Whenever a land you control enters, create a 4/4 red Dragon creature token with flying. | Ryan Pancoast

Ureni, the Song Unending | Legendary Creature | Spirit Dragon | Flying, protection from white and from black
When Ureni enters, it deals X damage divided as you choose among any number of target creatures and/or planeswalkers your opponents control, where X is the number of lands you control. | Alexander Ostrowski

Call the Spirit Dragons | Enchantment | | Dragons you control have indestructible.
At the beginning of your upkeep, for each color, put a +1/+1 counter on a Dragon you control of that color. If you put +1/+1 counters on five Dragons this way, you win the game. | Liiga Smilshkalne

Mox Jasper | Legendary Artifact | | {T}: Add one mana of any color. Activate only if you control a Dragon. | Steven Belledin

Ugin, Eye of the Storms | Legendary Planeswalker | Ugin | When you cast this spell, exile up to one target permanent that's one or more colors.
Whenever you cast a colorless spell, exile up to one target permanent that's one or more colors.
+2: You gain 3 life and draw a card.
0: Add {C}{C}{C}.
−11: Search your library for any number of colorless nonland cards, exile them, then shuffle. Until end of turn, you may cast those cards without paying their mana costs. | Joshua Raphael