Shield that absorbs damage using RF power. Have different tiers, perhaps have augmentative properties in higher tier versions as upgrades/modules, such as counter-offense abilities like deal x% of damage back to attacker.
Other ideas:
"Shocking" shocks attacker.
"Repulse" pushes the attacker back.
"Discharge" rapidly discharges electricity as an AOE attack.
"Fortify" casts a force-field protecting the player from all damaging sources
"Magnetic" if the player has magnetic armor, the shield can be thrown like a boomer-rang and have it return just like Captain America's shield.
Shield that absorbs damage using RF power. Have different tiers, perhaps have augmentative properties in higher tier versions as upgrades/modules, such as counter-offense abilities like deal x% of damage back to attacker.
Other ideas: