Garruk the Slayer
A gigantic Garruk card will be included in every Magic 2015 Prerelease box.
One player plays his or her Prerelease Magic deck as normal. This player always goes first. The other player, however, plays as Garruk! Garruk starts at 20 loyalty, and can activate one loyalty ability each turn. Garruk can be attacked, and if his loyalty reaches 0, he loses. Garruk Planeswalker card can’t be returned to its owner’s hand or removed.