Artifact bonuses for currect event:
lvl 1 → 5 hp
lvl 2 → 10 hp
lvl 3 → 10 hp, 2 magic
lv 4 → 10 hp, 3 attack, 2 magic
lvl 5 → 10 hp, 3 attack, 5 def, 2 magic
lvl 6 → 15 hp, 3 attack, 5 def, 2 magic
lvl 7 → 15 hp, 3 attack, 5 def, 4 magic
lvl 8 ->15 hp, 3 attack, 5 def, 6 magic
lvl 9 ->15 hp, 6 attack, 5 def, 6 magic
lvl 10 → 20 hp, 6 attack, 5 def, 6 magic