Don't judge a book by its cover, I guess
If you roll a die for any other reason (to simulate a coin flip, to choose pizza toppings, to create alternate timelines), that roll doesn't count
Not only is it a 4/5 attacker with flying, vigilance, and trample any time you want her to be, but if you want her to sit back you can turn a small creature into a threat each combat
Imagine this coming down on turn 2 thanks to colorless mana, and you can imagine how strong this card is
However that simplicity belies some pretty interesting gameplay implications, and theres no better way to illustrate those complications by launching right into Summons Summons are simply a variation of Sagas that are also creatures
It includes forums and social media groups dedicated to the topic