Take Faithless Looting, for example: you draw two cards, but you have to discard two, and you used up the Faithless Looting
This can vary depending on how rare the card is or demand for certain cards, but generally that is a good starting point
Purple Enel is dominating JPN tournaments
The deck additionally features a number of acceleration spells including mana rocks (Chromatic Lantern, Gilded Lotus, Arcane Signet, Blitzball, Commander's Sphere, Sol Ring) to help accelerate out your spells and allow you to cast them ahead of curve, as well as removal spells and counter effects (many of which are costed to trigger Y'shtola) to deal with your opponent's largest threats
This circumvents the traditional issue with aggro in Commander: the need to deal 120 damage
But having to commit to casting a four-drop every turn can tie up a lot of mana, so you need to be smart about your plays and maximize your attacks