Theres even an easel included, which is used to display these text-free cards
Essentially, you can pay X life to draw X cards, making this one of the best enchantments MTG players can use, period
A pair of Lava Coils in your opponent's opening hand can ruin your day
If it put a counter on every creature that entered, then we would be talking, but only boosting a single creature isn't really worth it
One of the best game modes on Magic: The Gathering Arena, for the sheer variety of decks that can come from it and the constantly updated card base that shifts the meta, is Brawl
In this deck, you can gain a pest a few ways, so I imagine thats why there is more text that says you can gain a little bit extra life whenever you would do so by one more point