Sol Ring

Power Sink

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Forest

Llanowar Elves

Berserk

Cast this spell only before the combat damage step.
Target creature gains trample and gets +X/+0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn.

Icy Manipulator

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

Jayemdae Tome

Prodigal Sorcerer

{T}: Prodigal Sorcerer deals 1 damage to any target.

Giant Growth

Target creature gets +3/+3 until end of turn.

Psionic Blast

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

Braingeyser

Mahamoti Djinn

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

Regrowth

Return target card from your graveyard to your hand.

Control Magic

Enchant creature
You control enchanted creature.

Island

Spell Blast

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)