I've noticed that it seems that all the synergy buffs for Consumed always seem active, even when there's not a single Consumed synergy token. For example, when coming across mobs in the Gauntlet who have just a single Consumed synergy point (no icons), they seem to get the benefits of having friendly fire (1 icon) and the health drain (4 icons). I'm not sure how the damage output is affected, and debuffs don't seem to stack (I don't think I remember them doing so during the Icerun event, so that behavior might be bugged as well).