If Zealous Conscripts enters the battlefield at the beginning of the end step how does the ability trigger?
Ie would i gain control of a creature for the whole of the following turn or would it immediately return to its owners control?
If the latter, can i sacrifice it first?
Effects that last "until end of turn", such as the control change and the granting of haste, end during the cleanup step in the same turn, after the active player discards excess cards (C.R. 514.2, 514.1). This is no different than if Zealous Conscripts entered the battlefield earlier in the turn than the end step. (Note that in general, a permanent can enter the battlefield only during a step or phase [see also C.R. 500.11]).
Notice the difference between cards that say 'until end of turn'
and cards that say
'at end of turn', or
'at the beginning of the end step', or
'at the beginning of the next end step':
Rule 512. Ending Phase
[...]
513: End Step
[...]
513.1a [...] abilities [...] printed with the trigger condition “at end of turn” [and] “at the beginning of the end step” [and] “at the beginning of the next end step” [do trigger.]
[...]
514. Cleanup Step
[...] all “until end of turn” and “this turn” effects end. [...]
Ie would i gain control of a creature for the whole of the following turn or would it immediately return to its owners control?
If the latter, can i sacrifice it first?
Cheers
and cards that say
'at end of turn', or
'at the beginning of the end step', or
'at the beginning of the next end step':
Rule 512. Ending Phase
[...]
513: End Step
[...]
513.1a [...] abilities [...] printed with the trigger condition “at end of turn” [and] “at the beginning of the end step” [and] “at the beginning of the next end step” [do trigger.]
[...]
514. Cleanup Step
[...] all “until end of turn” and “this turn” effects end. [...]
RULES OF MAGIC :
http://magic.wizards.com/en/game-info/gameplay/rules-and-formats/rules