Just a few thing this does:
Nerfs Recharge (oh, is that MotW or Corruption you're playing?).
Nerfs Morova, Moonshadow, Morganis and friends who ready cards on crits.
Makes Mana Tap and similar abilities much better.
In conjunction with above, nerfs Equipments.
Benefits players that go for the long game (as the more ticks after 10, the better this gets).
Penalizes rush teams that rely on using their ABCs near 10 and reusing them a second time right away.
"The beatings will continue until morale has improved."
- Standard corporate management technique