I tossed a tiny amount into the CUB Defi pool when it opened. I'm pretty sure I've made my transaction fees back (like $1.50), so everything after that is profit :D It does seem like a pretty safe pool as well.
I do like that they're adding Guild Brawls, the game really needs more content for guilds to do that's at least somewhat co-operative. Hopefully they'll add more content in that vein in the future.
Congrats on coming in first in your bracket :) We managed to pull off a 2nd place finish, but lack a lot of Gold foil decks to really fill out those brackets.