LLAMA-KRON

Currenty stuck at 1500 rating, and there's a lot of Llama-Kron duo.

He/She is my 5th Llama-Kron enemy of the day.

17 Mana versus >17 Mana.
It's a GG.

Any suggestion for a counter for this?
Or should I just rent this duo to rank up more higher?

This duo is too OP.
Maybe I'll try this one day.