Pre-emptive apology about formatting since I'm posting on mobile.
In a multi-player Commander game with 3 or more players (Player A, B, C) - say player A controls a Notion Thief. Player B (active player) has "infinite" mana and is going to cast Stroke of Genius to have someone draw their deck. If Player B targets Player C with Stroke for say, 300, Player A will draw their deck instead.
But my question is, if Notion Thief causes Player A to deck himself and lose, will Player C have to draw the remainder from the Stroke?
IE can Player B kill two people at once with Notion Thief out?
Only player A will lose the game. Losing for trying to draw a card from an empty library is a state based action. Those aren't checked during the resolution of a spell/ability. Since Notion Thief sets up a replacement effect, everything described in the scenario happens during the resolution of Stroke of Genius. Thus player A will draw his entire library, then fail to draw more cards for every additional card the Stroke and Thief instruct him to draw. Then Stroke finishes resolving by being put into its owner's graveyard, then state based actions check and see that player A has attempted to draw a card from an empty library since the last check of SBA, so that player loses. The other player never got the chance to draw a card due to the Thief.
In a multi-player Commander game with 3 or more players (Player A, B, C) - say player A controls a Notion Thief. Player B (active player) has "infinite" mana and is going to cast Stroke of Genius to have someone draw their deck. If Player B targets Player C with Stroke for say, 300, Player A will draw their deck instead.
But my question is, if Notion Thief causes Player A to deck himself and lose, will Player C have to draw the remainder from the Stroke?
IE can Player B kill two people at once with Notion Thief out?
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)