Most Constructed formats have players begin at twenty life
If you're not, you'll have to take a little more effort, but nothing will be "hidden" look at the result list for prices, keeping in mind that some entries may stray from the average (or have comments further explaining in what ways this card differs from what you would expect) and may need to be discarded in the interest of a truly representative result Following this method, you should have a good idea of how this card is being traded, and apply your individual judgement of fairness to it
Unfortunately for Wizards, an online retailer has let some of these slip early
In their Revitalizing Standard article back in May, WotC notes that: Even in the context of Magic growing leaps and bounds over the past few years, tabletop Standard hasn't kept pace
Just casting this card, letting it eat a removal spell, and drawing three cards in response is just a massive advantage