The only major downside to Griselbrand, outside of its legality issues, is that the card is very hard to cast
However, there are good reasons Haze hasnt put up results
Eject is good for interacting with your opponents creatures at all sorts of opportune moments, but it often feels even better to bounce your own creature
What is Inside a Collector Booster The exact contents vary slightly by set, but the standard composition for a collector booster is approximately 15 cards per pack, including: 5 or more cards of rare or mythic rare rarity 9 to 11 traditional foil cards Multiple cards in extended art, borderless, or showcase frames At least 1 card with a special treatment exclusive to collector boosters Premium basic lands with foil or alternate treatments Many sets add exclusive treatments that only appear in collector boosters
The real issue was that anytime a threat like Mirkwood Bats hit the table, it was dealt with, and I had no recourse against it or recursion