Built Bear

During a game, ignore any printed parts of Built Bear’s rules text that isn’t circled except for the legacy ability. For example, a Built Bear that doesn’t have any options circled is a {1}{G} 2/2 with no abilities except for legacy (which has no in-game effect because nothing is circled for it).

For many playtest cards, you’ll need to make a generous assumption that basic game rules would be updated to allow them to work. The Mystery Booster 2 Playtest Card Notes section (reproduced here in individual Gatherer rulings) provides guidance for fitting these cards into the existing rules structure.

In a Limited format with Continuous Construction, you can modify your circled options for Built Bear in between matches, but you can’t modify those options during a match (such as while sideboarding in between games).

Calculate Built Bear’s mana cost after you’ve finished circling options. That mana cost is considered to be printed on the card and is part of its copiable characteristics.

All of the circled abilities are considered to be printed on the card. They are also part of Built Bear’s copiable characteristics.

If you circled any of the power/toughness changes (+1/+1 or +0/+2), they are applied to Built Bear’s printed power and toughness and are also part of Built Bear’s copiable characteristics. For example, if you circle +1/+1, Built Bear’s printed power/toughness is 3/3. But if you circle both +1/+1 and +0/+2, its printed power/toughness is 3/5.