Originally Posted by
Mraktar
Oh, i didn't knew about Shiva's buff, so you realy may replace Asherath with Shiva+ Ctulhu. Personaly I use Lakshmi instead of Shiva so i can't do so.
In terms of overdrive control - yes, Ctulhu + BP ex is maximum overdrive control + a little boost to BG gain. It's nice, but Ruy-Oh+ PF ex/Shingen's MP ex just means much more damage/ more bursts + attack debuff cap (almost 10% less damage taken then with Ctulhu). So you may choose between this 2 options.