The Immortal Snail

On enter name a player other than yourself, The Immortal Snail must attack that player each combat if able
Indestructible, Toxic 10
Protection from controller and permanents they control
At the start of your end step, destroy all modifications on The Immortal Snail
If The Immortal Snail would be destroyed or exiled, return it to the battlefield under its owners control on their next end step
If The Immortal Snail controller would lose the game, create a token copy of The Immortal Snail under target p