Turret SD

Description
When damaged, the turret shoots five 20 damage shots at the attacker's current tile. The SD Turret can also hit the player if damaged with friendly fire.

Strategy and Synergy
Unlike other units, it is advisable to place those on your side of the field, specially if the target does not hit their own tiles or if the enemies tends to target your playfield often, such as some bosses. This can be a very handy passive damage booster and will also block up some shots and attacks. When laying it down, put them in the bottom rows, to avoid obstructing your path. The may boost its attack power and also protect it for longer, allowing the SD turret to keep up the supportive fire.

If you want to keep this spell, consider upgrading it with, so you can cast two of them since it will be afterwards, just don't forget to move upward/downward to avoid casting both of them on the same spot and risk damaging the already placed turret (and taking damage in return). Can be a strong spell for Hazel, but do not seem much use in many decks.