Spike Slime M
The Medium Spike Slime is an Act 1 enemy with 28-32 HP. It primarily uses Flame Tackle, which deals 8-12 damage and adds 1 Slimed card to your discard pile. At 50% HP, it Splits into two Small Spike Slimes. Unlike the Acid Slime variants, it does not apply Weak but deals more direct damage per turn.
The Medium Spike Slime's main threat is its consistent Flame Tackle damage combined with Slimed card pollution. Like the Acid version, killing it below 50% HP avoids the Split. It is generally less dangerous than the Acid variant since it lacks the Corrosive Spit debuff, but the direct damage can add up against defensive builds.