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: Add .
: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
: Target Assembly-Worker creature gets +1/+1 until end of turn.

(: Add .)

Flying

: Add .
, Sacrifice this land: Destroy target land.

: Prevent the next 1 damage that would be dealt to target creature this turn.

Enchant creature
Enchanted creature has mountainwalk. (It can't be blocked as long as defending player controls a Mountain.)

This spell costs more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Tap target untapped creature you control. If you do, add an amount of equal to that creature's mana value.

Enchant creature
Enchanted creature can attack as though it had haste.
: Untap enchanted creature. Activate only during your turn and only once each turn.

, : Target creature gains banding until end of turn. (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.)

Enchant creature
Enchanted creature has protection from green. This effect doesn't remove this Aura.

Prevent all combat damage that would be dealt this turn.

Change the text of target spell or permanent by replacing all instances of one basic land type with another. (For example, you may change "swampwalk" to "plainswalk." This effect lasts indefinitely.)

Enchant creature
Enchanted creature gets +2/+1.

Destroy target artifact with mana value X. It can't be regenerated. Detonate deals X damage to that artifact's controller.

Lightning Bolt deals 3 damage to any target.

Enchant creature
Enchanted creature has protection from blue. This effect doesn't remove this Aura.

Whenever a player casts a blue spell, you may pay . If you do, you gain 1 life.

First strike (This creature deals combat damage before creatures without first strike.)

Destroy target Wall. It can't be regenerated.

Target spell or permanent becomes red. (Its mana symbols remain unchanged.)

You may tap or untap target artifact, creature, or land.

This creature doesn't untap during your untap step.
At the beginning of your upkeep, you may pay . If you do, untap this creature.

Enchant artifact
Whenever you're dealt damage, put that many vitality counters on this Aura.
At the beginning of your upkeep, you may remove a vitality counter from this Aura. If you do, you gain 1 life.

: This creature gains flying until end of turn.

As this artifact enters, choose an opponent.
At the beginning of the chosen player's upkeep, this artifact deals X damage to that player, where X is 3 minus the number of cards in their hand.

Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

: Look at target player's hand.

Tap X target creatures. Winter Blast deals 2 damage to each of those creatures with flying.

Flying

Earthquake deals X damage to each creature without flying and each player.