The topic has passive skills in the title, but it's about support. Confusing XD Anyways, how about persistent support skills? Player who turns them on would cast a constant buff in a limiter area around, and other would be buffed as long as in this area. The skill could drain your EP or block it off. Or there could even be a new resource: SP (Support Points). They would act like EP, but for support skills. Having support skill active would drain your SP gradually. It would regenerate when no support skill is active, but reaching 0 would prevent regeneration briefly. Another way to regain SP would be killing/damaging enemies or something. When any player inside buffed area kills enemy, buff caster regains a portion of SP. This also makes support skills more useful in multiplayer, because more players = more SP regain. Or to make it equally useful for 1P and 2+P, SP drain could be proportional to number of players inside buff area, so with more players it drains faster, but it's also easier to recover. As for skills, you'd be allowed to use only one support skill at once. Casting another support skill would cancel the first one, but the second one would be cast on the same charge level (unless not available, then would downgrade) for free. This way you'd be able to freely swap between buffs, depending on situation. This makes you not recast the skill every time, but it would be active as long as you could keep your SP up. So players could be focused on beating enemies, and just get additional benefit from support skill. If that sounds too OP, maybe the skill could have some negative effect on the caster, like lowering attack on defense buff, so you'd have to sacrifice your own offense, so your party survives longer etc. But totem idea is good too.