The average mana value of a shrine as of The Last Airbender is about 3.3, so you generally get 7 mana worth of permanents into play for 4 mana
She's a great character though, although I feel the PSX version (and first localization) didn't do her a lot of favors as a character
Credit: Wizards of the Coast Astrologian's Planisphere BPhillipYork: Pumping up a creature is potentially powerful, you could slap this onto a Walking Ballista or something that can really generate a lot of counters
Theyre also notable for not selling any of MTGs competitors like Yu-Gi-Oh!, Flesh and Blood, etc
Note that preregistration prior to the Friday of prerelease gets a $5 discount off the weekend-of pricing, so preregister early
So, you are in black, so if you drop Merfolk Looter et all on turn two, this turn three, tap discard dork, venture, and then on turn four you can Buried Alive, venture