As a standalone card, I think this Anna only sees play if there is a big Ward threat terrorizing the meta
It draws a given number, in this case four for five mana, one more mana and card than Harmonize, Concentrate or Ambition's Cost
16 Colfenor, The Last Yew Printed in Commander Legends, Colfenor, the Last Yew is a graveyard-based commander that works well with creatures with high toughness
You get so many extra turns off this blue creature that reaching the final level might as well win the game, assuming your fragile creature survives
The effect of this version of Mana Confluence is exactly the same as the original, allowing you to trade a point of life for mana of any color
The card was graded as a Mint 9, an important factor to collectors