Corrosive Bargain is a rare major card out of the Synergy pool. +13% Power, but -15% Healing Received.

Raw power for poison builds that avoid damage rather than heal it back — long-range ticks and lingering kills suit that style. Skip it on attrition floors or if an ally's healing is your safety net.

You can take it once · any ability can be offered it.

It pushes your build toward Poison.