Chrono Sphere

Description
After hitting a Being or obstacle, the projectile will set the to 0. The projectile will keep moving forward normally while the time is frozen.

Strategy and Synergy
Line up structures in one row and fire this spell at them to get frequent time stops. Mana regen may be stopped as well, however you can still spam lots of 0 cost spells or use the time channeling a spell such as Infinity Beam.

The best structure for this purpose is, as it can be 4 structures from 1 spell, however, given it's rarity, its unlikely to get both monument and chrono sphere in the same run. it's probably better to aim for structures like Beam Crystals and Bomb Toss instead.