Island

Psychic Venom

Enchant land
Whenever enchanted land becomes tapped, Psychic Venom deals 2 damage to that land's controller.

Psionic Blast

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

Braingeyser

Sol Ring

Twiddle

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

Azure Drake

Flying Men

Counterspell

Mind Bomb

Each player may discard up to three cards. Mind Bomb deals damage to each player equal to 3 minus the number of cards they discarded this way.

Icy Manipulator

{1}, {T}: Tap target artifact, creature, or land.

Unstable Mutation

Enchant creature
Enchanted creature gets +3/+3.
At the beginning of the upkeep of enchanted creature's controller, put a -1/-1 counter on that creature.

Mishra's Factory

{T}: Add {C}.
{1}: Mishra's Factory 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.