Sword of the Animist is normally a very good support card that costs 7 and gives the first creature +2/+2 and destroys a 3x3 grid on the board. If it destroys its own support gem and the creature equipped has 2 health or lower the game will freeze and the only way to proceed is to quit out of the game and take damage.
And its especially very frustrating when the objectives in a fight were achieved 
I’ve had mine get destroyed and it just kills the dood it was attached to if his toughness goes below zero.