Sure, getting to draw more than one card may cost you four life each, however, in Commander that can be well worth paying
They're the key cards in the infamous Tron Modern archetype, which relies on their absurd mana ramp potential to bring out scary threats way ahead of schedule
See more Add To Wishlist Restock Notice Gatherer & Rulings (opens in new tab) NM EX VG G 20 available @ $0.49 Add to Cart 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 3 available @ $0.39 Add to Cart 1 2 3 $0.34 Out of stock
The key is that its ability is much worse than either ability would be individually both destroying a land and dealing two damage a turn would be broken, but you get their choice of it, and its a choice they get to make every turn, so its not as broken as it might appear initially but still strong
Still, for decks that care about fast, reliable mana across multiple colors, it's proving to be well worth the cost