Having ways to protect your commander that can be customized to meet your needs is just comfortable
Booster Packs Pull Rates 4th Slot89% 5th Slot56.756% 2-Diamond per pack95.243% Exact card 6.242% 1 in 16 Pack Points70
Eating a turn one Duress is still one of the worst things that can happen to most combo decks
A fused spell is one spell, not two
Secret Lair x Marvels Spider-Man: Heroic Deeds Secret Lair x Marvels Spider-Man: Heroic Deeds 1x Ephemerate ($30 JPN STA foil, 181k decks) 1x Three Visits ($42 SLD foil, 770k decks) 1x Lightning Greaves (INV foil $215, SLD foil $37, 2XM foil $19, SLD foil $16, LCC foil $22, SLD foil $6, 1.7 million decks) 1x Sol Ring (too damn many, all of them) 1x Command Tower (too damn many, all of them) The Ephemerate and the Three Visits are doing a lot of work here
Once you've effectively halted any aggression against you, you should be able to find any number of ways to end the game