In short, you can completely counter a group of spells in one cast, make combat way more confusing or straight-up win a game with just this card
But if you sacrificed to Phyrexian Altar make a mana, then you cannot copy it, since that's a mana ability
While other formats are harder to build on such a tight budget, you can easily play budget Modern or Pioneer if you sign up for both programs so that you have access to $12 of cards at any given time
Cards in the set will all have unique backs featuring the iconic Black Lotus and emblazoned with "30TH ANNIVERSARY EDITION." The retro-card frames are the same design used in the Time Spiral Remastered set, and the art is the same as the original printings, with a few modern updates
This is another draw two with extra spice card, from the notorious Modern Horizons 3
So your list will likely vary from ours, and we're interested to hear what you'd consider the most iconic cards in MTG