Rotos Siphi duo's hidden bonus explained
Lots of people say Rotos is bugged when he got killed by a "block revive" skill that he can still get revived.
It is not a bug and it suppose to happen when he paired with Siphi. Read the Siphi's passive skill description:
...Remove all debuffs from Rotos...
and "block revive" is a debuff, so removing that debuff is expected.
Also, trying to get Rotos+Siphi is astronomically hard unless your luck is enough to hit a lotttery jackpot or spent ridiculous amount of $$$ so this skill being amazing is also expected, it will encourage people to keep spending $$ to get both, but a warning to all tho, Plarium can be dirty like usual and claim that its a "bug" after so many people pulled both to render them less amazing, its your call whether you want to risk by trying, I had seen some spent over couple thousand dollars and not getting Siphi.