Underused Skills Challenge League (HCSSF + Mods)!

Siege Ballista,
Heavy Strike,
Ice Crash,
Lightning Tendies,
Flame Surge,
Doryani's Touch (from Item),
Vigilant Strike,
Ice nova,
Spectral Shield Throw,
Charged Dash,
Viper Strike,
Shock Nova,
Glacial Hammer,
Wild Strike,
Frost Wall,
Incinerate,
Cold Snap,
Frost Bomb (you can use Orb of Storms too since it's not a main skill),
Discharge,
Tectonic Slam,
Lacerate,
Vortex,
Siphoning Trap,
Cleave,
Storm Burst,
Cremation,
Seismic Trap,
Flame Totem,
Split Arrow,
Icestorm (from item),
Burning Arrow,
Ground Slam,
Dark Pact,
Detonate Dead,
Summon Holy Relic,
Animate Weapon,
Mirror Arrow.
Searing Bond
Ice Spear
Freeze Mine
Molten Shell, Tempest Shield, Immortal call, Bear Trap etc. - all defensive skills are okay so long as they aren't your damaging skills. They can be linked to supports so long as they aren't damage increasing supports. However, CWDT must be used with the listed skills above or other defensive skills. For example, "CWDT + Ball lightning + curse on hit+curse" would not be allowed since Ball lightning didn't make the cut.

You can also use any golems, corpse creation skills, auras/heralds, curses, support gems and skills (molten shell, warcries, etc), counterattacks (these MAY be linked to damaging supports if you wish), non-damaging totems, and movement skills (except cyclone, consecrated path and flicker strike).

You can use ancestral warchief totem or ancestral protector only if they are unlinked (essentially just for buff)

Edit: Obviously as an informal event, honor system is the only option.