Elf decks already played the Whisperer, so you shouldnt have a problem playing both
This is a great classic green creature
Mabel inspires the Mice around her, giving them +1/+1 as a passive bonus, while also creating the Cragflame, a legendary equipment token that gives a creature +1/+1, vigilance, trample, and haste
While you lack a way to reliably give them haste, you can power up your enchantments with cards like Divine Visitation and Intangible Virtue 9 Brudiclad, Telchor Engineer The Layers Go Deep With a combat trigger to make a 2/1 blue Myr token at the start of your combat, Brudiclad, Telchor Engineer will quickly overwhelm the battlefield with all sorts of tokens, with them rarely looking the same turn after turn
For starters, it resurrects cards from the last several years of Magic history with new, premium designs