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Regarding water...
There were some interesting suggestions above to add a slowing effect to "Ring of Cold" and "Ice Bolt."
Also, add the "Thunderstorm" spell from Heroes II as a weak Armageddon.
There is a suggestion to change the skill of the hero Adalaid:
Ring of Cold hits 8 hexes without affecting the central one.
If cast on a single-hex unit (ally), the effect remains as default.
If cast on a two-hex unit (ally), the ring hits around it in 10 hexes (like Hydra), without damaging the unit.
Regarding Eagle Eye...
Make "Eagle Eye" a counter-skill to "Obscure."
Also, artifacts that counter Obscure would be useful for Eagle Eye.
There were some interesting suggestions above to add a slowing effect to "Ring of Cold" and "Ice Bolt."
Also, add the "Thunderstorm" spell from Heroes II as a weak Armageddon.
There is a suggestion to change the skill of the hero Adalaid:
Ring of Cold hits 8 hexes without affecting the central one.
If cast on a single-hex unit (ally), the effect remains as default.
If cast on a two-hex unit (ally), the ring hits around it in 10 hexes (like Hydra), without damaging the unit.
Regarding Eagle Eye...
Make "Eagle Eye" a counter-skill to "Obscure."
Also, artifacts that counter Obscure would be useful for Eagle Eye.