They dont but still 4x 15% mana increase means stacked alfrike 
Gullin and Heimy also boost hp if they go off before they die
I hope they will make another batch of 3 and 4* heroes or make Odin or Thor from asgard realm. Atleast another 4* has to be Asgardian
I have both Guardian Owl and Boss Wolf… Maxed.
They are both Druid… Sadly it is hard to share druid emblems.
Apart of that Vela, Alberich, Kadilen+Costume are more prioritized for Druid emblems…
I do wish that both of them get buffed again to be able to shine and leaving their bench.
During purple tank era before GTV, I was only one in the alliance that ran Boss Wolf as tank.
I did use Guardian Owl in Yellow-mono offense team and he serves his right wing game changer very well.
But, they are not powerful enough for these days, frankly speaking.
Boss Wolf: It would be nice if he can do initial chain attack the same as Finley does and the rest of the status effects are remaining the same
G. Owl: It would be nice if he does DoT after the initial attack (only Yellow that does DoT) and the rest of the status effects are remaining the same.
Alfrike is such a gd menace she sure seems like a Slow hero. The others are meh, and I fear Owl more than Wolf (who is like two Gormeks with a side of annoying).