All things considered, such a change would likely make Pokmon an even better game than it already is, assuming it were ever implemented
But what if there were no such combo
Mithril Coat provides enduring protection, as its indestructibility comes from its static ability and not a triggered one
'Shattered Spire, Ozolith' + 'Medallion'
In the unusual case where Scouring Swarm becomes a copy of something else while its triggered ability is on the stack but before it resolves and seven or more land cards are in your graveyard when the ability resolves, the token will enter as a copy of whatever Scouring Swarm is copying
The sneaky ninjutsu is sweet, as is what's basically surveil 2 and draw a card every turn, which is a massive amount of card selection for a deck that needs to have the right answers in hand at the right times