Dracula could activate this defensive rune by transmitting energy into the pendent shaped magical symbol. A golden-pale energy shield will be created out of the pendent-shaped defensive rune.
The golden-pale energy shield is typically called protection range of a Magi-Mech.
The protection range can be as small as a brick or as big as a wall. The size of the protection range/energy-shield depends upon the amount of energy used to activate the magical rune.
The DEF magical rune provided impressive protection but it had one problem. The only problem was that the energy-shield will converge around Dracula. Hence, the other members of the team must be near Dracula or else they won't be in the protection range.
The protection range provided by the DEF rune could easily thwart a bombardment of multiple Copper-Demons «solar-blast».
The DEF magic rune was a tier-3 transcendental rune.