You can even cast it without destroying any creatures at all if youre the one whos dominating that side of the battlefield to take out pesky things like pillowfort effects and stax pieces
This deck was already a fringe deck in Modern, but Oath of Nissa might be exactly what it needed to propel itself firmly into the sphere of competitive Modern decks, especially since this is another deck that can use the recent big mana offerings well and might want something like Ulamog, the Ceaseless Hunger or even World Breaker, both of which, of course, Oath of Nissa can help find when you need it, giving you a different sort of flexibility, offering a card that does what others couldnt
Still the power level of the effect is proven and Muse Seeker will open possibilities
But let's not daydream on future White card draw, let's talk about the card we just got
The front face gets back a nonbattle permanent which is something that white and black can do when combined (white can get back artifacts, enchantments, lands, planeswalkers, and small creatures, while black can get back creatures of any size)