Steelbane Hydra is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

This creature enters with X +1/+1 counters on it. , Remove a +1/+1 counter from this creature: Destroy target artifact or enchantment.

Complete guide

Steelbane Hydra is a versatile Turtle Hydra that acts as a repeatable removal tool for pesky non-creature permanents. By fueling it with mana during your turn, you can ensure it grows large enough to control the battlefield while picking off enemy tools.

How it Scales

Steelbane Hydra enters the battlefield with a number of +1/+1 counters equal to the value of X you paid when casting it. Because its power and toughness are 0/0, it relies entirely on these counters to stay alive, making it a flexible threat that is relevant at any stage of the game.

Resolving the Activated Ability

To use the destruction ability, you must pay two generic and one green mana, then remove a +1/+1 counter as part of the cost. Once these costs are paid, you choose a target artifact or enchantment. The ability goes on the stack and, if the target remains legal upon resolution, that permanent is destroyed.

Strategic Considerations

Remember that removing the last +1/+1 counter from Steelbane Hydra will result in its toughness becoming 0, causing it to be put into the graveyard as a state-based action. Always ensure you have enough counters to keep the Hydra alive unless you are desperate to destroy one final target.

Common Mistakes

Players often forget that the removal of the counter is a cost. This means you cannot activate the ability if the Hydra has no +1/+1 counters left. Furthermore, if your opponent responds by removing the Hydra before the ability is activated, you cannot use the ability unless you have the mana to respond to their spell.

Interaction examples

Early Game Ramp

Llanowar Elves

On turn one, you play Llanowar Elves. On turn two, you use your land and the Elves to generate three mana. You cast Steelbane Hydra with X=1, resulting in a 1/1 creature that can already threaten to destroy an artifact if you have the mana next turn.

Fixing for Large Hydras

Birds of Paradise

With Birds of Paradise on the board, you have access to any color of mana needed for utility spells, but more importantly, you have extra mana to pump into the Hydra. If you spend five total mana, X becomes 3, giving you a 3/3 Hydra with three opportunities to destroy enchantments or artifacts.

Repeatable Destruction

Suppose you have Steelbane Hydra with four +1/+1 counters. During your opponent's end step, you spend three mana and remove a counter to destroy their strongest artifact. On your next turn, you can repeat this process as long as you have the mana and counters remaining.

Guide written with AI from the official text and rulings. Official English text prevails.