This easily slots into Steelsong decks, and played after a successful Ariel Spectacular Singer dig means the consistency is there
Itll see more play in cEDH than regular EDH for sure
It will be a welcome addition to decks that are going straight to the dome to try to burn out an opponent before the game gets past Turns 3-4
Young Hero Role aura enchantment with "Enchant creature" and "Enchanted creature has "whenever this creature attacks, if its toughness is 3 or less, put a +1/+1 counter on it."" for Cut In, Embereth Veteran, Merry Bards, Protective Parents and Return Triumphant
In Standard there's a controlling blue-white build that plays a bunch of self-milling card selection cards and wins either with a massive Haughty Djinn or Oculus and its army of 2/2s
The best answer is definitely Tyrants Scorn (just bounce the target in response for Claim)