Doc Ock's Tentacles

one generic mana Artifact — Equipment

Whenever a creature you control with mana value 5 or greater enters, you may attach this Equipment to it.

Equipped creature gets +4/+4.

Equip five generic mana

Once powerful tools of science, Dr. Otto Octavius's mechanical arms became his most formidable weapons.

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0.41 $

Foil 0.49 $

12 printings · up to 0.52 $

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Doc Ock's Tentacles rulings

2025-09-19
If a creature has in its mana cost, X is 0 when determining its mana value.

Doc Ock's Tentacles keyword rules

Equip Rule 702.6

Equip is an activated ability of Equipment cards. “Equip [cost]” means “[Cost]: Attach this permanent to target creature you control. Activate only as a sorcery.”

For more information about Equipment, see rule , “Artifacts.”

Equip abilities may further restrict what creatures may be chosen as legal targets. Such restrictions usually appear in the form “Equip [quality]” or “Equip [quality] creature.” These equip abilities may legally target only a creature that’s controlled by the player activating the ability and that has the chosen quality. Additional restrictions for an equip ability don’t restrict what the Equipment may be attached to.

If a permanent has multiple equip abilities, any of its equip abilities may be activated.

“Equip planeswalker” is a variant of the equip ability. “Equip planeswalker [cost]” means “[Cost]: Attach this permanent to target planeswalker you control as though that planeswalker were a creature. Activate only as a sorcery.”