One of the best examples of a white indestructible creature is Avacyn, Angel of Hope
Kindred Summons [Cat deck]: This is one awesome late gane play
Nobody expects you to create a bunch of tokens at instant speed in response to a Blasphemous Act, but you can also protect your board at a very acceptable rate without sinking any extra mana into the spell
It produces mana, untaps artifacts, scries, and most importantly for our purposes, makes a creature unblockable
Ambrosia Whiteheart Champion of the Clachan Dust Elemental Flock Impostor Jeskai Barricade Loyal Gryff Mischievous Pup Night Nurse, Healer of Heroes Otherworldly Escort Phelia, Exuberant Shepherd Rescuer Chwinga Restoration Angel Rhys, the Evermore Salvation Swan Samwise the Stouthearted Stonecloaker Sunpearl Kirin Vizier of Deferment Whitemane Lion
The bundle includes Hail, Caesar , Scrappy Survivors , Science