Mistwell
Crusty Old Meatwad
Seems to me this is a case where two paths both are enough to satisfy the nature flavor requirement. Also seems this is a case where either path makes sense for his character and he would have fun playing them both. Thus, it's relegated to a mechanical question for him as to which is better. Why else would you think he would be talking about the non-nature aspects?
My assumption is he picked up the one-ring for invisibility and is lured by The Precious to do the other more powerful things

Which is my way of saying I suspect he was lured by the power of spells like Bless, at the expense of a nature based spell with less power like Beast Bond.
There is nothing wrong with that, but I am asking him if that's what's going on. If he is finding himself lured by raw power as a distraction from control over nature, and if that's a result he's OK with for this kind of PC.