Greaves is usually the first choice, followed by Boots if you plan on targeting your own creatures a lot, and some decks are happy with a copy of each
The flexible mana cost offered by her compleated ability is a great immediate benefit, letting Nissa hit the battlefield any time from turns five to seven, and her first two abilities give you very efficient ways to protect her and get rid of problematic permanents
MTG supplemental sets Supplemental sets for Magic: The Gathering include cards that aren't legal to use in the TCG's Standard format
Each Glimmers of the Realm Puzzle includes a collage of different Disney characters that represent one of the magical ink colors found in Disney Lorcana
Note that you have to target it, so shroud, protection, hexproof will stop that
I typically prefer Opt to things like Preordain in decks with prowess dorks or counterspells