EDH don't want this. This has a few things going for it.
- It's in Sultai colors
- It puts things in the yard
- It can be a political card, allowing an "opponent" let you select a removal spell you need to thwart a third player
- You can pay his commander tax by delving more cards, making him easier to recast
The negatives outweigh the positives, the most important of which is that this is worse than Sidisi, Brood Tyrant, a general people aren't enthusiastic about. Why would you not build The Mimeoplasm and build this instead? This has "bulk rare" written all over it.