Excavate

Description
Every tile on the field fires a 25-damage projectile at whichever enemy is closest to the back row.

Strategy and Synergy
The projectiles are fairly quick, but aren't infallible. Consider pairing Excavate with effects like  or.

While some spells that break your own tiles seem like they would pair well with Excavate, like  or, destroying your own field for the sake of some extra damage isn't worth it. Excavate is much more effective when you focus on destroying the opponent's field, using spells like or.

Naturally, Break Terra is the best Excavate user, since can break tiles without the use of a spell.