TBA…
Firnessence Panacea is a Odyssey fusion in Plants vs Zombies Fusion. As an Odyssey fusion, it is exclusive to Odyssey mode and cannot be placed in standard gameplay levels.
Firnessence Panacea costs ? Sun. Efficient sun income management, such as pairing it with a Sunflower fusion, helps keep this cost from limiting your early-game planting options.
Firnessence Panacea attacks targeting enemies. Knowing its target priority helps you assign it to the lane or row where those zombie types are most concentrated for maximum impact.
Yes — Firnessence Panacea was built for the demanding conditions of Odyssey mode and scales well into advanced Odyssey difficulty tiers.