Force Spike

Counter target spell unless its controller pays {1}.

Mishra's Factory

{T}: Add {C}.
{1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Maze of Ith

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Wall of Air

Defender, flying (This creature can't attack, and it can block creatures with flying.)

Island

Backfire

Enchant creature
Whenever enchanted creature deals damage to you, this Aura deals that much damage to that creature's controller.

Braingeyser

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Flying Men

Counterspell

Prodigal Sorcerer

{T}: This creature deals 1 damage to any target.

Sol Ring

Mahamoti Djinn

Flying (This creature can't be blocked except by creatures with flying or reach.)

Ghost Ship

Flying
{U}{U}{U}: Regenerate this creature.

Tolaria

{T}: Add {U}.
{T}: Target creature loses banding and all "bands with other" abilities until end of turn. Activate only during any upkeep step.