Suggestion unwanted cannon/launchers

perhaps a special buff, that would allow in arena, players to shoot unwanted cannon/launchers instead of balls

 

At first I thought the suggestion to be a little bit untraditional, but yeah.. yeah it might work. I have an idea:

Skin of Steel (common):
Only usable in: Arena
Effect: Gain a shield which absorbs 2000 damage.
Time of Effect: 00:01:00
Cooldown: 00:05:00
Note: The cost of skin of steel is 20 10-pounds diamond canons or 1 12-pound.

Battlearmor of Steel (epic):
Only usable in: Arena
Effect: Gain a shield which absorbs 5000 damage.
Time of Effect: 00:01:00
Cooldown: 00:10:00
Note: The cost of Battlearmor of Steel is 1 18-pound or higher.

Shield of Patient Zero (legendary):
Only usable in: Everywhere
Effect (1): Gain a shield which absorbs 10000 damage.
Effect (2): The player can only take damage from stone canonballs as long the shield is active.
Time of Effect: 00:03:00
Cooldown: 01:00:00
Note: The cost of Shield of Patient Zero is 200.000 diamonds worth of canons (can only be brought once).

Lore: '' In the open seas a little Pirate called Patient Zero once said: I got so many useless canons, I dont know what to do with all of them. He then thought up an idea, a wonderful idea. Why not use the canons as armor for the ship? In no time the canons got a purpose. One last purpose.''