I have Helm of Possession down and I tap 2 land, the card, and sac a creature.
I now have control of my opponents creature.
Question 1: At the start of my next turn, can I uptap my land while leaving Helm tapped?
Question 2: If my opponent kills the creature I am controlling, what happens to the artifact? (I assume the killed creature goes into my opponent's graveyard)
Thank you.
1) Yes. The Helm's rules text itself tells you so: "You may choose not to untap Helm of Possession during your untap step." This statement only applies to the Helm, not any other permanents under your control. So your choice to untap it or not does not affect those other permanents in any way. If nothing is keeping them tapped, you have to untap them.
2) The removed creature goes to its owner's graveyard. Nothing happens to the artifact that gained you control of the creature at that time, it remains as it was right before. You may still choose to not untap the artifact during your untap step, but doing so will likely not gain you any advantage.
My scenario:
I have Helm of Possession down and I tap 2 land, the card, and sac a creature.
I now have control of my opponents creature.
Question 1: At the start of my next turn, can I uptap my land while leaving Helm tapped?
Question 2: If my opponent kills the creature I am controlling, what happens to the artifact? (I assume the killed creature goes into my opponent's graveyard)
Thank you.
2) The removed creature goes to its owner's graveyard. Nothing happens to the artifact that gained you control of the creature at that time, it remains as it was right before. You may still choose to not untap the artifact during your untap step, but doing so will likely not gain you any advantage.
Former Rules Advisor
"Everything's better with pirates." - Lodge
(The Gamers: Dorkness Rising)
"Any sufficiently analyzed magic is indistinguishable from science."
(Girl Genius - Fairy Tale Theater Break - Cinderella, end of volume 8)