Besides the instant cash payout, building a relationship with your LCS can lead to insider leads on stock dates, a friendly phone call when a card of interest hits the shelves, or even a store credit bonus on sold goods if you think you may make a purchase there in the future
The following Q&A has been editorialized and lightly trimmed for better flow
Should he resolve, you're realistically going to have a 9/9 creature swinging in the following turn, with Trample
The math plays out the same way: The percent chance of a card from a category, divided by the number of options, gives you the odds for a certain card
The second knock is that Alena relies on either a steady flow of creature token generation, or a big turn with a flurry of cards for which some of your best cards are Ball Lightning, Bonecrusher Giant has more power than mana cost, and Cosmic Larva has a real drawback
Make sure they have the card on them before you trade or they might forget and trade the card to someone else and no one wants that