The pull rates for Silver Tempest were compiled by the site TCGPlayer, and data was gathered from over 8,000 booster packs from the expansion
'Partner With' puts designers in an arguably worse bind, as if the two cards are individually strong, then the pair loses some of its identity and there are obviously issues with balancing power level
As a mutating creature spell resolves, if its target is legal, it doesnt enter the battlefield
What puts this reprint on the list, though, is the Dragonscale Foil treatment
If a card with ninjutsu was successfully put onto the battlefield with a Cursed Totem out and it had some other activated abilities, then you wouldnt be able to access and activate those because its now a permanent
While its not quite strong enough to push into CEdh, Edgar makes for a strong commander