The cleanest source of all is simply lifelink any big lifelink creature or a Whip/Basilisk Collar effect turns combat into a lifegain trigger
The image must be centered on the card within a tolerance not to exceed approximately 55/45 to 60/40 percent on the front, and 75/25 percent on the reverse
In set boosters, every pack contains one non-foil Mystical Archive card, and you have a chance at getting a second Mystical Archive card in standard foil treatment
However, weight alone is not reliable for authentication
Unless the opponent negates the summon with a card like "Solemn Strike", there's a limited number of weaknesses to defeat "Zushin"
Fabricate (SPG foil $20) 172k decks There are multiple good versions of this card, and I think itll settle in the $10 range, given the number of copies about to enter circulation