Goblin Goliath

Chroma — When this creature enters, it deals damage to target creature equal to the number of red mana symbols in the mana costs of permanents you control.

If a source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

First strike (This creature deals combat damage before creatures without first strike.)

If a source would deal damage to an opponent, it deals double that damage to that player instead.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

When this creature enters, it deals 1 damage to each creature your opponents control.

Whenever a creature an opponent controls with a counter on it dies, you create a tapped Treasure token.

When this creature enters, it deals damage equal to the number of Giants you control to each non-Giant creature.

Flying

If a source you control would deal damage to an opponent or a permanent an opponent controls, it deals double that damage instead.