mtg flip card token The 10 Best Coin Cards In Common Changeling (This token is every creature type.) Reverse Type Flip the Switch · Innistrad:

It essentially doubles the amount of damage you can do, making it much easier than normal to kill your opponent through damage

However, what makes her so nasty is her ETB-based abilities

Gnat Miser Inspired Idea Jin-Gitaxias, Core Augur Locust Miser Thought Devourer Thought Eater Thought Nibbler

Dont forget that you need 2 cards to exile to reanimate something with Young Necromancer

Why have one Nimble Mongoose when you could easily have two instead

This isnt the most powerful card by any means but add in any kind of life gain synergy or recursion and Shield Mare will do more than pull its weight against aggressive decks