Astrologian and Gravity (Buff Idea)

[Felis]

While talking with a friend I came up with the idea that since we are masters of time, why not allow Gravity to have a side effect of Slow - but in the sense of Skill/Spell Speed. When used it would slow down the rate of attack for X amount of time, before wearing off so it wasn't just a AoE Damage.

Shouldn't it be Heavy because of increased gravitation?