Sol, Advocate Eternal

Legendary partner (You can have two commanders if this is one of them. The other one is promoted to legendary.)
Flying, vigilance
Teamwork — Whenever you attack or block with both Sol, Advocate Eternal and its partner, support 4 and investigate four times.

Goblin War Strike

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

Akki Scrapchomper

{1}{R}, {T}, Sacrifice an artifact or land: Draw a card.

Akki Blizzard-Herder

When this creature dies, each player sacrifices a land of their choice.

Krenko's Command

Create two 1/1 red Goblin creature tokens.

Akki Drillmaster

{T}: Target creature gains haste until end of turn.

Akki Underling

As long as you have seven or more cards in hand, this creature gets +2/+1 and has first strike.

Goblin Gardener

When this creature dies, destroy target land.

Goblin Wizardry

Create two 1/1 red Goblin Wizard creature tokens with prowess. (Whenever you cast a noncreature spell, they get +1/+1 until end of turn.)

Akki Ronin

Whenever a Samurai or Warrior you control attacks alone, you may discard a card. If you do, draw a card.

Akki Avalanchers

Sacrifice a land: This creature gets +2/+0 until end of turn. Activate only once each turn.

Mountain

Goblin War Buggy

Haste
Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Akki Rockspeaker

Goblin Mountaineer

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)