Wild Guess

As an additional cost to cast this spell, discard a card.
Draw two cards.

Flame Lash

Burn Bright

Creatures you control get +2/+0 until end of turn.

Sure Strike

Target creature gets +3/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Goblin Assailant

Precision Bolt

Precision Bolt deals 3 damage to any target.

Shock

Mountain

Wily Goblin

When Wily Goblin enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Shivan Dragon

Flying
{R}: This creature gets +1/+0 until end of turn.

Collector's Vault

{2}, {T}: Draw a card, then discard a card. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Expedite

Target creature gains haste until end of turn.
Draw a card.

Reckless Impulse

Exile the top two cards of your library. Until the end of your next turn, you may play those cards.