>>48979509as for moveset, with wood guard it is really sturdy
25% reduction seems mediocre at first, but at lv 100 with full EV investment
The damage it receives is equivalent to the damage that would be received by a pokemon with base 160 defense stats
oh and wood guard extends to partners in doubles as well
it gets softboiled through tutor for reliable recovery
and it also gets u-turn allowing you to do set up double screen (which it learns naturally) then slow u-turn away to your whatever
4th move can be a wide variety of stuff, it can stealth rock, trick room, taunt and even gets STAB explosion if you want to
all in all, even if it's attack stat drops off heavily towards the later game, it remains very useful