User blog comment:RaijinSenshi19/Omni Lord Hierarchy Decklists - Part 5: The Setting Sun/@comment-10483040-20160308200919/@comment-6102960-20160308201833

"And then we have the option for a 7th attack if you use Oswira to clear your center after attacking with all your monsters. The extra attack might just end the game then and there."

And you wont always have a closed center, or sometimes you just might need the Penetrate. It is up to you to scale the situation. .3.