Maybe Eyrik for the same idea as Amber. Pill less.

Indeed, I used to work with Eyrik until I got my Eklore.
Eklore is the best for Piranas, even better than Morphun, but you'd have to change some cards on your deck. Use Taljion to force pills out of your opponent, use Ulrich with 1/2 pills to try hitting your opponent off guard...

The best Piranas deck I have used until now is this one: http://www.urban-rivals.com/presets/?id_preset=1193100
You could even improve it by using Raeth instead of Kristin.

Simple answer? Hugo. He gives Tula a 2 or 3 pill advantage over tons of common DT cards, makes Trey an effective low-pill threat, and (unlike Morphun) helps a Smokey or Hawkins open. See High Seas Victory [DT Winner].

How about Hugo he gives every Piranas 6 extra attack which is good especially for Taljion and Raeth who are both attack manipulators

Well Taljion