Secure the Wastes

Put X 1/1 white Warrior creature tokens onto the battlefield.

Gideon, Ally of Zendikar

Prairie Stream

Reflector Mage

Declaration in Stone

Thraben Inspector

Spell Queller

Smuggler's Copter

Walking Ballista

Irrigated Farmland

Glacial Fortress

Hallowed Fountain

({T}: Add {W} or {U}.) As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Teferi, Time Raveler

Each opponent can cast spells only any time they could cast a sorcery. +1: Until your next turn, you may cast sorcery spells as though they had flash. −3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.

Castle Ardenvale

Castle Ardenvale enters the battlefield tapped unless you control a Plains. {T}: Add {W}. {2}{W}{W}, {T}: Create a 1/1 white Human creature token.

Plains

({T}: Add {W}.)

Island

({T}: Add {U}.)