Do you think El-P was talking about Huskar in his song EMG?
The song "EMG" from El-P's album "I'll Sleep When You're Dead" contains the following lyrics:
"Is my mommy in heaven?
Well, she's definitely not here
Now run away and go play with this hatchet and flaming spear"
I think there's a high chance the lyrics here refer to the Dota 2 hero, Huskar, who is a durable carry and an initiator. His second ability, Flaming Spears, allows him to deal greater damage at the expense of his own health. This also follows back to the chorus of the song "Everything must go" as Huskar's life is draining constantly if he keeps Flaming Spears on Autocast.
The reference to hatchets is probably to another Dota 2 hero, Troll Warlord, who uses twin hatches to attack and whose species is "Troll" just like Huskar.
If this isn't proof enough, the line "Get on some butterfly to the fire shit" from the chorus is definitely a reference to the in-game item Butterfly, which is core to Huskar's build.
I assume the part about the mother is a little tongue in cheek as I assume nobody's mother would approve of them playing Dota 2, a highly addictive game with a toxic community.