Krebons has taken over my mind. Galvanic Juggling neutralizes neuron thought processes. I shall pay 800. I shall protect my Lord. All hail Krebons. King. Krebons.
Paying 800 Life Points is a cost. The effect of "Krebons" does not target.
If "Asura Priest" attacks "Krebons" and the effect of "Krebons" is used to negate the attack, "Asura Priest" cannot attack that same "Krebons" again during the same Battle Phase.