Galvanic Blast

Galvanic Blast deals 2 damage to any target.
Metalcraft — Galvanic Blast deals 4 damage instead if you control three or more artifacts.

Darkmoss Bridge

This land enters tapped.
Indestructible
{T}: Add {B} or {G}.

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.
Draw a card.

This land enters tapped.
Indestructible
{T}: Add {B} or {R}.

This land enters tapped.
Indestructible
{T}: Add {R} or {G}.

Lightning Bolt deals 3 damage to any target.

When this creature enters, return target instant or sorcery card from your graveyard to your hand.

When this creature enters, draw a card.
{T}: Add {G}.

Trample
When this creature enters, you take the initiative.