Useful clash effect that can take out an enemy mini at the start of the fight. Since a lot of minis only have 5 HP, Spear Goblin at 0 star can already one shot non-tank 0 star minis. The +3 damage from 1 star lets you do this more reliably against upgraded minis, which is going to be useful for the second star upgrade to double its damage for a while.
Skill: Spear Toss
"Throw a HUGE spear forward, dealing damage on hit"
Spear toss deals 5 damage and can be cancelled by certain clash effects that can stun if it's faster than spear goblin.
"Spear Toss gains +3 Damage"
Total damage will become 8.
"Boast: +1 ATK for 6s Boast: After defeating an enemy"