Personally I would use the hydra card, since skeleton worker has that size restriction. I mean, most if not all demi-humans are medium sized, but you never know. Plus the damage is 5% higher for hydra.
[heroine of the light][perpetually squishy]
Mulberry | Rozelle | Tearose | Bluet | Nagisa | Puffles
[snow song]
(This post was last modified: 11-19-2010, 07:22 AM by Mulberry.)
Yes the effect is the same, so they add up. Because it adds up, while skeleton worker counts as a different effect, it'll be as Jen said that normally skeleton worker is the superior choice. However, skeleton worker doesn't apply to peco riders in heRO as they are large, most people stick with hydra anyway for the generality to hit peco riders.