Tinker Bell has a moderate Strength of 4 and a good Willpower of 5, but it's her two abilities that make her a powerful Glimmer
This constant threat of recursion and other graveyard-based synergies like delirium and threshold make exile-based removal absolutely critical
Whats more, every pack includes a Mystical Archive instant or sorcery card with special art and a showcase frame, which gives this box a little more pull than the usual rare-chasing angle
Gettin Mama Odie, Mystical Maven out there early - which should be doable thanks to the cheap cost of the card - alongside a handful of songs, will very quickly put you into a position wherein you can play a lot more cards per turn or a much more expensive, and more powerful, card a lot earlier than your opponent
Eventually, you should be able to trim enough cards to get down to 23 non-lands across your two colors
Marionette MasterMarionette Master can become a wincon in a deck like this, using the Fabricate trigger to put +1/+1 counters on Master instead of just making the tokens, which will ramp up the damage we deal every time Whisper sacrifices our artifact creatures