Other Goblins get +1/+1 and have mountainwalk.

When Muxus enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order. Whenever Muxus attacks, it gets +1/+1 until end of turn for each other Goblin you control.

Goblin spells you cast cost {1} less to cast. Goblins you control have haste.

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

Whenever you cast a red spell, target creature can't block this turn.

When this creature enters, it deals damage equal to its power to any target. Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Enchant creature Enchanted creature has "{T}: Create a token that's a copy of this creature, except it has haste. Exile that token at the beginning of the next end step."

{2}: This artifact deals 1 damage to any target. Sacrifice this artifact.

Whenever Krenko attacks, put a +1/+1 counter on it, then create a number of 1/1 red Goblin creature tokens equal to Krenko's power.

Whenever a creature you control enters this turn, put a +1/+1 counter on it and it gains haste until end of turn. Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

Sacrifice a Goblin: Regenerate target creature.

When this creature enters, search your library for any number of Goblin cards, reveal them, then shuffle and put those cards on top in any order.

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

Haste Whenever Ardoz or another creature you control enters, that creature gets +2/+0 until end of turn. {3}{R}: Create a 1/1 red Goblin creature token with haste. Activate only as a sorcery.

Whenever a player casts a red spell, you may pay {3}. If you do, untap target permanent.