Protean Hydra

Protean Hydra was introduced in the Magic 2010 core set, released in July 2009. This set marked a significant shift in Magic: The Gathering history as it was the first core set to feature entirely new cards alongside reprints, departing from the traditional practice of using only cards from previous sets. The Hydra was designed to showcase the creature type's classic growth mechanic, offering a resilient threat that could recover counters even after taking damage, embodying the savage, adaptive nature of green-aligned creatures in the game's color pie.

The card's illustration was created by artist Jaime Jones, who sought to capture a sense of fluid, terrifying movement and biological instability. The visual design emphasizes the creature's multihued and shifting physical form, contrasting with the dense, organic greenery of its background. Upon release, the card was well-received by players for its flavor-forward mechanics, becoming a staple of the set's identity and a favored inclusion for casual players who appreciated the challenge of managing its growing power and toughness during combat.