Destroy all Forests.

, : Whenever target creature deals combat damage to a non-Wall creature this turn, destroy that non-Wall creature. When the targeted creature leaves the battlefield this turn, sacrifice Acidic Dagger. Activate this ability only before blockers are declared.

Prevent the next X damage that would be dealt to target creature this turn, where X is your devotion to white. If damage is prevented this way, Acolyte's Reward deals that much damage to any target. (Each in the mana costs of permanents you control counts toward your devotion to white.)

, : Acorn Catapult deals 1 damage to any target. That permanent's controller or that player creates a 1/1 green Squirrel creature token.

Search target opponent's library for an artifact card and put that card onto the battlefield under your control. Then that player shuffles their library.

Exile target creature you control, then return that card to the battlefield under its owner's control.
Draw a card.

When Act of Authority enters the battlefield, you may exile target artifact or enchantment.
At the beginning of your upkeep, you may exile target artifact or enchantment. If you do, its controller gains control of Act of Authority.

Untap target creature. It gets +2/+2 until end of turn and can block an additional creature this turn.

Target creature gets +2/+2 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

As long as Adanto Vanguard is attacking, it gets +2/+0.
Pay 4 life: Adanto Vanguard gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

(Transforms from Legion's Landing.)
: Add .
, : Create a 1/1 white Vampire creature token with lifelink.

As Adaptive Automaton enters the battlefield, choose a creature type.
Adaptive Automaton is the chosen type in addition to its other types.
Other creatures you control of the chosen type get +1/+1.

Flash
Adaptive Shimmerer enters the battlefield with three +1/+1 counters on it.

: Adarkar Sentinel gets +0/+1 until end of turn.

: Add or . Spend this mana only to pay cumulative upkeep costs.

Flying, vigilance
: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.

: Add .
: Add or . Adarkar Wastes deals 1 damage to you.

Flying
: Target creature loses flying until end of turn. ( can be paid with one mana from a snow permanent.)

At the beginning of combat on your turn, if you control a Basri planeswalker, put a +1/+1 counter on Adherent of Hope.

Raid — If you attacked this turn, you may pay rather than pay this spell's mana cost.
Counter target spell.