you touch a willing creature 

for the next minute they get a protective aura that gives that creature a suitable counterattack 
when they take damage of the following types they can use their reaction for the effect listed after the type

fire :  attacker makes a con save on failed save attackers movement becomes 0 and cant take reactions for 1 turn 

frost : attacker makes a dex save on a failed save attacker takes 3d8 fire damage 

lightning : attacker makes a str save on a failed save the attacker gets knocked back 1d10 ft and gets knocked prone

poison : attacker makes a int save on a failed save the attacker becomes frightened until the beginning of their next turn