I see Ruunin everywhere and now she much too cost efficient.

Compare to before: Ruunin costed 6 fearia, which means she had 66% cost efficeincy on the first time, 100% on the second time and 133% on the third time. So she is only worth the costs if she is played at least four times. Only after playing her four times she started to become cost efficient, if we consider the previeous costs. After 3 times we got a 4/4 a 6/6 and a 8/8 for 18 faria, which is 100% cost efficient, withe the fourth summoning she becomes a 10/10 for 6 which is 166% cost efficient, resulting an an overall efficency of 116,5%, which is about a verudan force.

Now Ruunin starts at 80% cost efficiency and is already 120% cost efficient on the second time, meaning we are already 100% cost efficient after the second time. the third time gives her a cost efficiency of 160% and an overall efficiency of 120%. The fourth time gives her a cost efficiency if 200% and overall a cost efficiency of 140%.

Also the lower cost now means you can get with less effort to the high cost efficiency summon. If you really felt the need to buff her and increase her cost efficency you could let her start as 5/5 for 6 fearia. But I do not think the buff was necessary at all and this way you not only did increase the efficency but also accelerated the play of getting there.

Before the buff ruunin was a scaling late game card and playing her meant to lose impact on the board. So you had to sacrifice something for the late game. That is not really the case anymore.

Especially since combinations like with feed the forest now make her 100% cost effective from the beginning.

The only was to counter a Ruunin was the frogify card. So now we have card, that is nearly impossible to deal with for three of the four colours. and even Frogify means you have to pay 4 fearia and take 2 damage on a creature or play another event just for a five fearia card.

Also the interaction with voice of truth is bad. After getting reduced to a 4/4 and then killed the next summon lets her start with the unreduced stats.