Manamorphose

Add two mana in any combination of colors.
Draw a card.

Bitter Reunion

When this enchantment enters, you may discard a card. If you do, draw two cards.
{1}, Sacrifice this enchantment: Creatures you control gain haste until end of turn.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Goblin Anarchomancer

Each spell you cast that's red or green costs {1} less to cast.

Mountain

Thunderscape Familiar

First strike
Black spells and green spells you cast cost {1} less to cast.

Reckless Impulse

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

Forest

Glimmer Bairn

Sacrifice a token: This creature gets +2/+2 until end of turn.

Thermo-Alchemist

Defender
{T}: This creature deals 1 damage to each opponent.
Whenever you cast an instant or sorcery spell, untap this creature.

Sprout Swarm

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Create a 1/1 green Saproling creature token.

Nettle Sentinel

This creature doesn't untap during your untap step.
Whenever you cast a green spell, you may untap this creature.

Blisterspit Gremlin

{1}, {T}: This creature deals 1 damage to each opponent.
Whenever you cast a noncreature spell, untap this creature.