I'm curious for opinions. Mardu Pyromancer decks have begun to trend towards this as well in the hopes of putting down a faster clock, and with 8 pieces of one mana removal in our main board, protecting it from combat seems reasonable enough. Additionally it's already a card you want to see in the Storm, Burn, Hollow One, u/W control and Tron match ups to varying degrees. Eternal scourge is probably better than Rabblemaster in the u/W control match, and ideally you wouldnt want both, but that's the only match that I have experienced where Scourge really and truly shines so perhaps then Scourge could be relegated to sideboards.
It does add a creature to the list that is lest robust against a removal spell like path to exile, but path isn't as common in the top decks other than u/W control and potentially out of the sideboard for burn. (And maybe bant company?) But Skred decks have already trended towards Hazoret the fervent, which is an addition that already turns on path. It can be Fatal pushed, but much like Pia and Kiran it leaves something behind.
Curving up from Rabblemaster into Koth into Stormbreath feels strong.
Thanks in advance for your opinions!
Genuinely curious as to what people's opinions are considering they are similar cards in a competitive mana slot. What do you guys think is the better choice in the metagame?