Its ability to thin the deck while providing massive card advantage makes it one of the top-tier enchantments in MTG for any white-based strategy
Ultimately, as always, we sadly cant predict the future
Putting aside the extra turn negation, this is Mangara, the Diplomat PLUS a draw whenever an opponent draws their second card each turn
It also doesn't matter if the opponent you attacked is still in the game
For example, if Fiend Hunter's enters-the-battlefield ability is copied and two creatures are exiled, they both return when Fiend Hunter leaves the battlefield
For example, if you've spent three mana on spells so far this turn and you control a permanent with an ability that triggers "whenever you expend 4," that ability will trigger the next time you spend at least one mana to cast a spell this turn