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Frontier Siege | Enchantment | | As Frontier Siege enters the battlefield, choose Khans or Dragons.
• Khans — At the beginning of each of your main phases, add {G}{G}.
• Dragons — Whenever a creature with flying enters the battlefield under your control, you may have it fight target creature you don't control. | James Ryman
Sandsteppe Mastodon | Creature | Elephant | Reach
When Sandsteppe Mastodon enters the battlefield, bolster 5. (Choose a creature with the least toughness among creatures you control and put five +1/+1 counters on it.) | James Zapata
Shamanic Revelation | Sorcery | | Draw a card for each creature you control.
Ferocious — You gain 4 life for each creature you control with power 4 or greater. | Cynthia Sheppard
Temur War Shaman | Creature | Human Shaman | When Temur War Shaman enters the battlefield, 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. | Nils Hamm
Wildcall | Sorcery | | Manifest the top card of your library, then put X +1/+1 counters on it. (To manifest a card, 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.) | Adam Paquette
Yasova Dragonclaw | Legendary Creature | Human Warrior | Trample
At the beginning of combat on your turn, you may pay {1}{U/R}{U/R}. If you do, gain control of target creature an opponent controls with power less than Yasova Dragonclaw's power until end of turn, untap that creature, and it gains haste until end of turn. | Winona Nelson
Dromoka, the Eternal | Legendary Creature | Dragon | Flying
Whenever a Dragon you control attacks, bolster 2. (Choose a creature with the least toughness among creatures you control and put two +1/+1 counters on it.) | Eric Deschamps
Atarka, World Render | Legendary Creature | Dragon | Flying, trample
Whenever a Dragon you control attacks, it gains double strike until end of turn. | Karl Kopinski
