Pictures of Spider-Man

The genre-fiction framing masks a familiar green tool: a dig-and-fix stapled onto a permanent that isn't a body. On entry it filters five cards deep for up to two creatures, the kind of enter-the-battlefield selection green usually has to buy with a creature attached. Here it arrives on an artifact, so the digging comes free of a summoning-sick blocker and free of the color's customary price for card advantage. The second mode carries the design's real weight: instead of loitering on the battlefield after it has cashed its trigger, it converts itself into a Treasure whenever you can pay one and tap it. That turns the spent permanent from dead weight into deferred ramp or fixing, and it means the card is never fully cashed out until you choose to cash it. The sequencing tension is the point. Sacrifice early and you smooth a color-screwed hand; hold it and the artifact sits as a threat of a Treasure, a mana source you get to time around a big turn. Green rarely gets both selection and fixing in the same three-mana object without a creature to pay for it, and packaging the two on a sacrificial artifact keeps each half honest: you dig now, you ramp later, and you can't do both with the same card twice.