Command of Unsummoning

Cast this spell only during the declare attackers step and only if you’ve been attacked this step.
Return one or two target attacking creatures to their owner’s hand.

Killer Bees

Flying
: Killer Bees gets +1/+1 until end of turn.

Goblin King

Other Goblins get +1/+1 and have mountainwalk.

Browse

: Look at the top five cards of your library, put one of them into your hand, and exile the rest.

Unlikely Alliance

: Target nonattacking, nonblocking creature gets +0/+2 until end of turn.

Anarchy

Destroy all white permanents.

Greed

, Pay 2 life: Draw a card.

Gaseous Form

Enchant creature
Prevent all combat damage that would be dealt to and dealt by enchanted creature.

Killer Bees

Flying
: Killer Bees gets +1/+1 until end of turn.

White Scarab

Enchant creature
Enchanted creature can’t be blocked by white creatures.
Enchanted creature gets +2/+2 as long as an opponent controls a white permanent.

Fyndhorn Pollen

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
All creatures get -1/-0.
: All creatures get -1/-0 until end of turn.

Anarchy

Destroy all white permanents.

Runed Arch

Runed Arch enters tapped.
, , Sacrifice Runed Arch: X target creatures with power 2 or less can’t be blocked this turn.

Imposing Visage

Enchant creature
Enchanted creature has menace. (It can’t be blocked except by two or more creatures.)

Cooperation

Enchant creature
Enchanted creature has banding. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature’s combat damage, not its controller, among any of the creatures it’s being blocked by or is blocking.)

Lure

Enchant creature
All creatures able to block enchanted creature do so.

Snowfall

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
Whenever an Island is tapped for mana, its controller may add an additional . If that Island is snow, its controller may add an additional instead. Spend this mana only to pay cumulative upkeep costs.

Infernal Darkness

Cumulative upkeep—Pay and 1 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
If a land is tapped for mana, it produces instead of any other type.

Breath of Dreams

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
Green creatures have “Cumulative upkeep .”

Orcish Librarian

, : Look at the top eight cards of your library. Exile four of them at random, then put the rest on top of your library in any order.

Sunstone

, Sacrifice a snow land: Prevent all combat damage that would be dealt this turn.