Thundering Armor

You infuse armor with pulsing energy, protecting that alluy and knocking a single foe away with the intense reverbation. Choose a friendly creature within range that is wearing armor (if you choose yourself, you do not need to be wearing armor). They gain a +2 bonus to AC until the end of their next turn. You also choose a hostile creature within 5 feet of the first creature. That hostile creature must make a Strength saving throw. On a failure, it takes 32 2d8 thunder damage and is pushed 10 feet away from the friendly creature you chose.

At Higher Levels. If you use a spell slot of 2nd-level or higher to cast this spell, the thunder damage is increased by 1d8 for each spell level above 1st.