Steel Wall

Snap

Return target creature to its owner's hand. Untap up to two lands.

Ocular Halo

Enchant creature
Enchanted creature has "{T}: Draw a card."
{W}: Enchanted creature gains vigilance until end of turn.

Island

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Horseshoe Crab

Divination

Pili-Pala

Flying
{2}, {Q}: Add one mana of any color. ({Q} is the untap symbol.)

Counterspell

Riptide Turtle

Soliton

Glacial Wall

Hard Evidence

Create a 0/3 blue Crab creature token.
Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Dispel

Shore Up

Target creature you control gets +1/+1 and gains hexproof until end of turn. Untap it. (It can't be the target of spells or abilities your opponents control.)

Hermetic Study

Enchant creature
Enchanted creature has "{T}: This creature deals 1 damage to any target."