New character: Sakka, the Druid

Placeholder art, featuring a rock:

Sakka is a Druid, a Psionic class that steadily pulses Psychic damage onto all enemies in their range.

Compared to Ajatta, a Wretch, Sakka has lower Atk and HP, but a longer range and higher Def, and his attack interval of 1 second is drastically faster; however, his attacks function much differently to most units. Every second, Sakka emits a pulse that deals Psychic damage to all enemies in his range simultaneously; however, each pulse only deals 35% of the normal damage, so Sakka's DPS per target is quite low despite his relatively high Atk and fast attack rate. Despite his extremely weak attacks, their massive effective area of effect and Psychic damage's Def-bypassing properties allow Sakka to steadily chip away at large crowds of enemies at once.  Much like Tykki, he deals less DPS per target than Ajatta, but more total DPS when attacking at least two targets, although his net damage doesn't scale quite as sharply to account for his very large area coverage.

Sakka's passive, Life's Pulse, grants his attacks a small chance to Shock any enemies he hits, causing their next attack to fail; slow attacking enemies are most susceptible to this, as they give Sakka more chances to Shock them between their attacks to cancel their next attack. Sakka's active, Energy Resonance, slightly boosts his own Atk and, more importantly, causes his attacking pulses to release additional smaller pulses around all allies in his range for reduced damage. While the boost to his personal DPS is modest, each additional pulse generated around an ally is another chance for his passive to apply Shock to enemies, allowing Sakka to more effectively shut down dangerous enemies near his teammates. Sakka is a crowd control unit that pairs best with fragile melee DPSes that can take advantage of his paralyzing swarms of enemies, and who can serve as a conduit for Energy Resonance.

And with that, the full roster of characters for the next demo release has been added! Now I need to give all of them prettier art. Meri is already partway done!