This is less abusable than it is on a card like Boomerang as it costs four but it still very powerful with there being man lands, Lake of the Dead and bounce lands all over the place
Thirdly, migrating will destroy any card you have more than four of, for no compensation
The spells aren't exiled after casting either, allowing you to play the same powerful spell multiple times a turn
Another route could be a much more aggressive deck that focuses on maximizing Nekusars damage output with cards like Solphim, Mayhem Dominus and Harmonic Prodigy to focus on winning with a few massive triggers instead of many small ones
I have mentioned this card before in some articles, so I am dropping it to Honorable Mention, and it had risen in price a few bucks since I delved into it about 2-3 years ago
You may cast the creature later from exile.) If two targets are chosen for Dizzying Swoop and one of them becomes an illegal target but not the other, the legal target will be tapped and Dizzying Swoop will be exiled