Sol Ring

Unsummon

Return target creature to its owner's hand.

Phantom Monster

Control Magic

Enchant creature
You control enchanted creature.

Ancestral Recall

Counterspell

Prodigal Sorcerer

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

Mox Sapphire

Psychic Venom

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

Air Elemental

Chaos Orb

{1}, {T}: If Chaos Orb is on the battlefield, flip Chaos Orb onto the battlefield from a height of at least one foot. If Chaos Orb turns over completely at least once during the flip, destroy all nontoken permanents it touches. Then destroy Chaos Orb.

Island

Illusionary Mask

{X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate only as a sorcery.

Glasses of Urza

Wall of Air

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

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Mahamoti Djinn

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

Merfolk of the Pearl Trident

Lord of Atlantis

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)