unfortunately the main gem for tanks has no use for pvp.
it would be amazing if carnelian added utility to pvp. imagine the tank entering the middle of the team, using his taunt and it affects the enemies around!
some effect suggestions:
- lower the defense of enemies
- decrease enemy damage
- slow down enemies.
we can also imagine it as a buff for the group, as if it were an inspiration, increasing damage, defense or speed. they are non-op effects and add usefulness to the team and to the tank as a whole.