Tactical damage option

@eriksaltwellmygroup wants more tactical feel. Thought i’d add dmg bonus if hit w adv-maybe adv on dmg roll?U test that? Gotchas?Other ideas? that works, but i'd apply it to both sides, PCs and monsters. should about even out, with an advantage for the monsters.

— Mike Mearls (@mikemearls) June 17, 2015