Magical tinkering is an ability that lets you Sacrifice an Artifact: Search your library for an artifact card with mana value equal to 1 plus the sacrificed Artifacts mana value
Like most Pokmon cards, the value of Slowbro Spirit Link depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Evolutions)
(2011-06-01) If Green Sun's Zenith is countered, none of its effects will happen
It's a lot like Voracious Hydra without the modality, but with three-for-one potential as opposed to the normal two-for-ones you get from these creatures
This is cardboard collecting, its not supposed to be rational
Sure, you have to have a ton of Elf creatures in play, but thats the goal of Elfball anyway