Goblin Grenade

As an additional cost to cast this spell, sacrifice a Goblin.
Goblin Grenade deals 5 damage to any target.

Goblin Gathering

Create a number of 1/1 red Goblin creature tokens equal to two plus the number of cards named Goblin Gathering in your graveyard.

Add {R} for each Goblin on the battlefield.

Goblin War Strike deals damage to target player or planeswalker equal to the number of Goblins you control.

Lightning Bolt deals 3 damage to any target.

As an additional cost to cast this spell, tap four untapped creatures you control.
Draw three cards.

Draw three cards.
Islandcycling {1} ({1}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)