Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Legal Toolbox Buy This Card Notes and Rules Information for Avenger of the Fallen: The value of X is calculated only once, as Avenger of the Fallens mobilize ability resolves
If Ob triggers during an opponents turn, you have an opportunity to play the exiled card during your next turn
If the targeted creature isn't put into a graveyard this turn, that ability never triggers
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Atla Palani, Nest Tender: If Atla Palani dies at the same time as one or more Eggs you control, its last ability triggers for each of those Eggs
I think what makes the card fine for Modern is that the creatures are powerful enough to keep it in check, while it lacks Swords to Plowshares that Legacy has to let you protect Jace
It doesn't replace the existing archetypes, but adds a new layer of deck variety: Boros Beatdown can optionally be built as Boros Soldiers, Rakdos Midrange could have a Warrior theme