One Woman Swarm [Expert Ronin]

Clearly Wasp is the best Ronin hero since she is a One Woman Swarm. Once you're all set up, she can rock a massive 10 defense for a turn since we're all experts here. All you have to do is stack your deck just right and you can't fail. I guess if you're not an expert you might be able to get 8 defense so you can swing for 8 and then In Harm's Way for 8. Or ready up with Army of One or Ever Vigilant to clear the field with 8 attack or 8 thwart.

Normally as an expert, you don't have to ever go back to alter-ego, but in case you do we have Defensive Training to help augment her natural ability of G.I.R.L to shuffle cards back into her deck. You can use her alter-ego ability to put The Best Offense... and Ever Vigilant back in and G.I.R.L. puts Army of One and In Harm's Way back in so you can more easily stack your deck for maximum expert plays.

As expert players, normally we aren't struggling with resources, but Build Support will help get out one of our resource generators and Superpower Training can fetch Bio-Synthetic Wings if we didn't expertly shuffle our deck to ensure it's on top. Just a bit of extra expert deck fixing.