I’ve been testing Willbreaker in Tezzeret to try to find a good deck. I was playing in Story mode against Chandra under the Planeswalker Challenges (ie. the Level 50 one) and the following bugs surfaced with Willbreaker:
Bug 1 - Willbreaker + Claustrophobia
When Willbreaker’s ability triggers while I have Claustrophobia on the board, sometimes the opponent’s first creature stays disabled even after been swapped over and then doesn’t attack. I can’t seem to identify a pattern as to when it triggers.
Bug 2 - Willbreaker + Mage-Ring Responder
When Willbreaker’s ability triggers on an opponent’s Mage-Ring Responder, the swapped over MRR is suddenly able to attack despite neither side making a 5-match. MRR then remains able to attack until the end of the opponent’s turn (which usually leads to MRR’s direct damage ability killing Willbreaker lol). But unless Willbreaker is intentionally supposed to remove attack restrictions, this should be a bug.