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The first allows you to draw a card at the end of your turn if either player lost four or more life in that turn, allowing you to draw a potential counterspell for your opponents upcoming turn

006 - Witch of Pain (You begin with "Block Attack", "Stim-Pack", "Dragon Seeker", "King of Yamimakai" and "Share the Pain" in hand

Koga Trainer | Original: Gym Challenge Variants Holo 1st Edition Prices Others Artist Ken Sugimori Rarity Rare Holo Other Printings Would you like to learn more about this card

Not sure if you wanted the technical explanation but, the color variance is created by a decreased magenta ink density