This Tournament:

Points as I understand them:
Across Board: +(10)
No common Chess Logic: +(10)
Aggressive: +(10)
Abilities: -(5^1.5)
Custom Lines: N/A
Total: 18.8196601125 or roughly 18.8 Points

The actual unit:

Creativity: 4/5 (New Idea)
Theme: 4/5 (It strikes an enemy and then retreats)
Execution: 2/5 (A bit OP with the range on the unblockable minion attacks, not to mention it can kill a champion and get enchanted to escape avoiding having to trade pieces. I would suggest decreasing the range, increasing the cost, removing the ability to attack non-minions, and/or making the enchant only happen on minions.)