"Any number" effects like this is pretty effective usually, and you could go a long way by stealing other players artifacts and enchantments to sacrifice to this
The baseline is already pretty good, and her attack trigger can make almost anything -- including Angelo -- into a threat
Cards are expensive, and it behooves every Magic player to protect their investment
It will counter anything, then let you cast a free spell from your graveyard with that mana cost or fewer if they are an instant, sorcery, dork or walker of the planes
Maybe you prefer the Modern incarnations of mill and hold your Hedron Crabs and fetch lands very dearly
Kynaios and Tiro of Meletis These two gentlemen are the heroes of a city-founding story, which are something of an old mythological standby