Set your sample directly as a card count, or specify it by turn with a play/draw toggle the starting player skips their first-turn draw (rule 103.8a), so you have seen one fewer card on the play than on the draw
Being able to wipe the board for a single mana is an incredible thing, so its easy to see why you should have a few copies of this card in your collection
It also means they can keep cards safe that might otherwise be messed up by hand disruption like being made to discard a card
Their Details tab displays the curve, card type, mana cost and mana source distributions all right at the top of the screen, and you can hover over parts of the pie charts to get the exact number of cards making up that percentage
Its a perfect option for daily Magic: The Gathering enjoyment at a nearly unbeatable price
Bouncing cards isn't quite as good as sending them to the graveyard, but for a cost as low as this at instant speed we really can't complain