Volcano Monster, Goukaterra

[AUTO]:When this unit is placed on (RC), [COST][Counter-Blast 1], choose one of your opponent's rear-guards with grade less than or equal to the number of Research cards in your order zone, and retire it. [AUTO](RC):When this unit attacks, if your order zone has three or more Research cards, this unit gets [Power] +5000 until end of that battle.