mtg commander 2016 invent superiority deck Revisting the Legends of Etherium Shaper learned to command powerful works of artifice on the Esper shard of Alara Commander 2016 Deck - Invent

Extended card lifespan

But you can also use artifact lands, although these are more limited in quantity

There are borderless character versions of cards from the main set and the Commander decks

You have access to specific cards that are both good against them and provide massive standalone advantages in Glorybringer and Chandra, Torch of Defiance

If you do win the high-roll lottery, then I think its easy to understand how a cheaper, more splashable Spelljack is desirable

I know 21 commander damage got decided on due to the original cycle of Elder Dragons having 7 power and you getting hit three times equaled 21 but the book quote is just so fitting for our format