Word KeyVatn - the Norse term for water!
Norns - The Norns are known as the Norse Goddesses of fate.
Wulvers - Scottish creatures described to be humanoid with wolf heads.
Alp - Alp is the german term for elf-like creatures.
Rhines - The river rhines is the river in which well known Nymph Lorelei resided.
Mahr - Mahr is known as one of the most terrifying german folklore figures connected with dreams and night, with the name being translated to mare, as in nightmare.
Sirin - Sirin are a part of Russian mythology, known as humanoid creatures with bird wings and feet.
Regen - Regen is the German term for rain.
Sol - Norse Goddess of sun, wife of Thor
Eir - Norse Goddess of medicine and healing
Saga - Norse Goddess of Knowledge and water
Combinations I think are cool!
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Vatneir - Nornsaga - Mahregen - Solrhines - Sirinalp - Wulveir - Sageir - Vatrhines - Eiregen - Alpsaga - Wulvatn - Rhinesaga - Sirineir - Soleir - Mahrsol - Nornsol - Solalpeir - Wulveregen - Rhineir - Norneir - Mahrsaga - Vatnmahr - Solvatn - Regeneir - Solaga
These are just a couple of combos I came up with, I'm sure there are hundreds of other cool ones! Hope I helped even just a little bit! (I kinda fell down a rabbit hole- very fun!!)