Which science to R3?

Frankenberries

I've got one t5 science currently. Who should I save it for?

Frankenberries

Ibom & void already r3

KingSageThe1st

Mr. Negative or Overseer

Renaxqq

Joe Fixit

Frankenberries

Really? Fixit? I mean he's better since his buff but R3 worthy?

ReedRichards423

Quicksilver EASILY!!!

Viking_St3v3

Anti Venom or Titiania. AV shuts a lot of stuff down. I R3 my AV and he is great. If I had a 6* Titiania I probably would have R3 her first.

HoadyOZ

Quicksilver

Frankenberries

Titania's got synergy w my r4 doom as well as my r3 ghost, if that matters

SUPREME77

Quicksilver by a MILE