The card 'Tishana's Tidebringer' has an ability when entering the battlefield, counters target activated or triggered ability of an artifact, creature or planeswalker, then that creature loses all abilities for as long as she remains on the battlefield(mana abilities cant be targeted). I just had someone 'crew' an artifact vehicle? I'm refering to 'Lumbering Worldwagon'. Opponent cast it, I flashed in Tishana and countered it's 'enters the battlefield' ability, then the next turn the opponent crewed the vehicle. whilst Tishana was still on the battlefield. 'crew' is an ability and I'm unsure as to why they were able to do that? It seems like a bug to me. the card