Legacy players have a huge pool of powerful removal spells, so having the option to have protection from half of them isnt going to get you anywhere these days
While I can see a need to put more Equipment in this particular deck, as theres only 16 core Equipment cards and drawing cards isnt always kind, its still a very well-rounded deck, with simple but powerful mechanics
Your best bet is to take advantage of the life youll lose due to cumulative upkeep, and when youre almost dead you can switch life totals with other players using cards like Tree of Perdition
Spells you cast with mana value 6 or greater have cascade
You could just as easily use a sticky note, a coin, or anything else, and it wouldn't make any difference
Tooth and Nail 3 This is a much worse offender than Natural Order