While there may be other cards with similar abilities like Fencing Ace or Adorned Pouncer, Boros Swiftblade can still be a strong choice depending on the overall strategy of the deck
After this phase, there is an additional combat phase." Legendary Planeswalker - Zariel Zurzoth, Chaos Rider Whenever an opponent draws their first card each turn, if it's not their turn, you create a 1/1 red Devil creature token with "When this token dies, it deals 1 damage to any target." Whenever one or more Devils you control attack one or more players, you and those players each draw a card, then discard a card at random
While other cards over the years have featured effects similar to this (mythic rare Zur, Eternal Schemer from Dominaria United comes to mind), Opalescence was the first to do it en masse for enchantments, and, due to its novelty and being first on the scene, it clocks in with a price point approaching $30
The only question is what you want to do with this: with Disciple of the Vault you can drain your opponents, with Intruder Alarm you can infinitely untap your creatures, and with Soul Warden you can gain infinite life
Most notably is partner with sibling Alphinaud Leveilleur who combine to a decent two spell commander
Zanarkand, Ancient Metropolis is the green land in this cycle
