Sphere of Safety

Rulings:

- If you control Sphere of Safety, your opponents can choose not to attack with a creature with an ability that says it attacks if able.

- In a Two-Headed Giant game, if one player controls Sphere of Safety, creatures can't attack that player's team or a planeswalker that player controls unless their controller pays {X} for each of those creatures he or she controls. Creatures can attack planeswalkers controlled by that player's teammate without having to pay this cost.