No reviver makes it harder, but taking UDK to 60 should help, and he'll continue to be useful elsewhere. I'd probably round the team out with Seeker, who also likely will be useful elsewhere (specifically, CB). Vogoth is another option for that slot.

I'd use Vogoth, in a guardian set if you have decent pieces, and also take him and UDK to 60

Vogoth is a beast, and brings a ton of survivability to any team.

have 5 sets of regen+immortal to switch around make most FW easy wins .. thats how i got my UD one done ;)

You only have to 3* it once :)

Grinner has a revive.  Only single target so not great but it's something.