Walking SpongeHow it works & interactions with other cards

What it Does

Walking Sponge has an activated ability that requires you to tap it. Upon activation, you target one creature on the battlefield and choose one of three specific keywords for it to lose: flying, first strike, or trample. This effect lasts until the end of the current turn.

How it Resolves Step by Step

First, you activate the ability by tapping Walking Sponge and choosing a legal target creature. Upon resolution, you choose one of the three listed keywords (flying, first strike, or trample). If the target creature currently has that keyword, it loses it immediately; if it doesn't have the chosen keyword, the ability simply resolves with no effect. You cannot choose any other keywords like haste or vigilance, as the card's text strictly limits the choice to the three listed.

Common Mistakes

A common error is trying to remove multiple abilities at once. According to the official rulings, the target loses just one of the listed abilities per activation. Another mistake is thinking this prevents a creature from regaining the ability later in the turn; if another effect grants the creature flying after the Sponge's ability has resolved, the creature will have flying again.

When to Play it

Walking Sponge is most effective during the beginning of combat or the declare attackers step. By removing flying, you can force a creature to be blocked by your ground units, or by removing trample, you can use a small 'chump blocker' to absorb all the damage from a massive attacker.

Interaction examples

Grounding a Flyer

Ornithopter of Paradise

If your opponent attacks with Ornithopter of Paradise, you can tap Walking Sponge and choose flying. The Ornithopter of Paradise loses flying until end of turn, allowing you to block it with any of your non-flying creatures.

Targeting a Generic Creature

Foundry Inspector

You can activate Walking Sponge targeting Foundry Inspector. Even though Foundry Inspector does not have flying, first strike, or trample, it is a legal target. You would choose one of the three keywords, and the ability would resolve, effectively doing nothing since the Inspector didn't have the keyword to begin with.