This line was addd recently to the abilities_english.txt

Code:
		"DOTA_Tooltip_ability_phoenix_supernova_abilitydraft_note"		"Level 20 talent requires Sun Ray to also be drafted."
In AD, ability-specific talents don't exist anymore. Therefore, this note makes no sense.

On the other side, Pulse Nova should get an AD note saying that Lightning Storm needs to be drafted in order for the aghs upgrade to work (which strikes enemies with random single-lightning storm bolts).