Buster Sword
This has happened multiple times. When I take control of an opponents creature that has equipped the Buster Sword and I do damage to an opponent, then I don't draw a new card and I cannot cast a spell as the description in the buster sword card says. Instead my opponent who is the owner of the buster sword card draws a new card
emergon#04090
shared this idea
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Rezzahan#77802
commented
Because the opponent is still the controller of the Buster Sword, you just took control of the creature it's equipped to, and ONLY the creature. And since the trigger is an ability of the equipment and not an ability granted to the creature, the controller of the equipment gets the trigger. Equipment and auras can be attached to permanents you do not control, and doing so does not give away control of them. You control the Pacifism enchanting your opponent's creature, and you still control the equipment if the opponent takes control of the creature it's attached to.