gravity pull is close to useless you have mometumed chargers and 0 attck otyughs
The otyughs work upgraded, eating creautres under 5 HP, which is where the gravity sheild comes in, while, if you have a high attack creature, play a gravity pull on it, and just wait until otyugh can eat it. The chargers are there for some attack, plus, they wont get effected by the sheilds.