Lands that tap for multiple mana like Ancient Tomb can come back untapped to accelerate your big plays, permanents like Gilded Drake that you traded away to an opponent let you ensnare another big creature, or you can simply retake something stolen by an Agent of Treachery
Union Arena is a "Common Rules Trading Card Game" that allows you to play a card game using each of your favorite characters, and you only need to learn one set of rules
But what did that mean for the set
Each Elite Trainer Box included in the 2pack contains nine Prismatic Evolutions booster packs (each with 10 cards + 1 Basic Energy card), a fullart foil Eevee promo card, 65 collectible card sleeves, 45 Pokmon TCG Energy cards, six damagecounter dice, one competitionlegal coinflip die, two plastic condition markers, four dividers, a players guide to Prismatic Evolutions, and a redeemable code card for Pokmon Trading Card Game Live digital play
It also only has four cards in total when the most valuable Secret Lair always (so far) have had five or more