Any damage done to Aerodactyl by attacks from your opponent's Pokémon is reduced by 10 for each React Energy card attached to Aerodactyl (after applying Weakness and Resistance).

Does 10 damage plus 10 more damage for each Energy attached to Aerodactyl.

During your opponent's next turn, prevent all effects, including damage, done to Aerodactyl by attacks from your opponent's Pokémon-ex.