This is a deadly card against effect-reliant decks such as Dragon-types, wherein Effect Cards and Spell Cards are designed specifically to shuffle Dragon cards from any part of the deck
That'll count for battlefield (Zombify), hand (Raise Dead), exile, or library recursion
While Amy Rose offers unique utility and synergy in such a deck, there may be better options available depending on the overall strategy and card pool, like Winota, Joiner of Forces, for example, which offers a more powerful and versatile effect that can potentially lead to explosive board states
Instead of simply attempting to outlast my opponents, I want to use the life gain as an additional source of value, and potential win condition
Basilica Guards Basilica Screecher Blind Obedience Crypt Ghast Kingpin's Pet Knight of Obligation Life Insurance Pontiff of Blight Sorin of House Markov Sorin, Ravenous Neonate Syndic of Tithes Syndicate Enforcer Syndicate Heavy The Kingpin of Crime Thrull Parasite Tithe Drinker Treasury Thrull Vizkopa Confessor