If youre using playtest cards / proxies for casual games, the practical takeaway is simple: make sure the type line is readable , because legendary status changes real gameplay decisions (copying, board states, and a whole lot of Commander nonsense)
This attacks damage isnt affected by Weakness, Resistance, or any other effects on your opponents Active Pokmon
She protects your other enchantment creatures with powerful keywords and, at the end of your turn, can return an enchantment creature from your graveyard directly to the battlefield
Still, I think this card will have its niche in blue/white/x decks that want to both have permanents enter the battlefield and fuel their graveyard - maybe something like Sefris of the Hidden WaysSefris of the Hidden Ways
There's always a demand for demons in EDH decks