Twinshot Sniper

Reach
When Twinshot Sniper enters, it deals 2 damage to any target.
Channel — {1}{R}, Discard Twinshot Sniper: It deals 2 damage to any target.

Hidetsugu's Second Rite

If target player has exactly 10 life, Hidetsugu's Second Rite deals 10 damage to that player.

When Circuit Mender enters, you gain 2 life.
When Circuit Mender leaves the battlefield, draw a card.

When Sleeper Dart enters, draw a card.
{T}, Sacrifice Sleeper Dart: Target creature doesn't untap during its controller's next untap step.

Create three 1/1 red Goblin creature tokens.

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

First strike
Menace (This creature can't be blocked except by two or more creatures.)
{T}, Sacrifice Goldhound: Add one mana of any color.

Create two 1/1 red Goblin creature tokens.

{2}, {T}: Tap target artifact or creature.

Lightning Bolt deals 3 damage to any target.

Haste
Whenever Goblin Javelineer becomes blocked, it deals 1 damage to target creature blocking it.

As an additional cost to cast this spell, sacrifice an artifact.
Create three 1/1 red Goblin creature tokens.