2/5. Sha256 and Scrypt. If their Scrypt farm isn't already massive it will be.
However, I'm a fan of what Myriad has done. I like to see some innovation in coins and multi-PoW definitely has some potential.
Well, I'll update when photos get leaked of their Scrypt farm.
Regardless, single blockchain coins feel somewhat....outdated? Because exactly this type of stuff is allowed to happen.
Look 20 years into the future and you might very well see ASICs for all types of algorithms, regardless how resistant. Now take a look at the coins. Is it best to have the ASICs ruling entire blockchains with 1 algo or multiple algos (Myriad)?
In the meantime the at home miners have 3 other algorithms to realistically compete (against each other only!) for 3/5 Myriad's coin supply for a long long time.