Cunning (Roll Summa-Verminoth's attack dice secretly. Show them to your opponent after damage prevention.)
As long as a Location is in the Space arena, Summa-Verminoth gets Damage Control 2 and Overkill.
Keywords
Damage Control
Damage Control X: A cumulative, triggered ability that means, "When your build step starts, you may remove up to X damage counters from this unit."
Overkill
Overkill: An isolated ability triggered during the pending damage POP that means, "When this unit attacks, you may divide hits in excess of the defending unit's remaining health between that unit and another unit in the same arena." The player who controls the attacking unit decides how many hits (if any) in excess of the defending unit's remaining health to reassign as damage to the second unit. (That player can't change their mind afterward.) A number of hits equal to the defending unit's health must be assigned to the defending unit, and the remainder may be assigned to the defending unit or another unit in the same arena. Overkill damage is caused by the ability, not the die roll. Shields, Parry, and Armor have no effect against it, but damage prevention not specifying dice works normally. Both units resolve damage in tandem.
Cunning
Cunning: An isolated, static ability that means, "Roll this unit’s attack dice secretly. Show them to your opponent after damage prevention."