Reaper

Description
At higher Tiers, the Reaper teleports multiple times, leading to more Slashes. He also takes less time before slashing.

Strategy
When the player is standing in the back row, the Reaper will teleport in front of him, setting up good opportunities for close range spells like or. At higher Tiers, this gets harder due to higher Enemy health and faster Slashing, making this Strategy very risky.