When I summon a Sentinel Sliver, its ability says: 'Sliver creatures you control have vigilance'. And later on I summon a Manaweft Sliver, and its ability says: 'Sliver creatures you control have "(tap): add one mana of any color to your mana pool'.
Does that mean if I try to tap a Sliver for mana and its has Vigilance, does it un-tap itself?
No
Vigilance = attack without tapping
You must still tap to use abilities if it is apart of the rules text
No. Vigilance only applies to attacking.
Quote
702.20a Vigilance is a static ability that modifies the rules for the declare attackers step.
702.20b Attacking doesn't cause creatures with vigilance to tap. (See rule 508, "Declare Attackers Step.")
702.20c Multiple instances of vigilance on the same creature are redundant.
RESOLVED
Ah. Ok, thanks a lot guys.
This kinda means that my "expert" friend didn't notice I was actually doing something wrong. I was kinda using it as a unlimited supply of mana...
Quote from: El Bellfry Toro on October 12, 2013, 09:07:07 PM
Ah. Ok, thanks a lot guys.
This kinda means that my "expert" friend didn't notice I was actually doing something wrong. I was kinda using it as a unlimited supply of mana...
Yea, that's a HUGE thing to overlook. When in doubt, just google the mechanic "+ MTG + ruling"
It also means that if i have an enchantment "whenever enchanted creature taps you buy a card" it is not going to work?
Quote from: Gabriel Gusso on October 14, 2013, 09:18:42 PM
It also means that if i have an enchantment "whenever enchanted creature taps you buy a card" it is not going to work?
Buy? Or is that a typo?
Either way, Vigilence only applies to attacking, not activating abilities.
Quote from: Gabriel Gusso on October 14, 2013, 09:18:42 PM
It also means that if i have an enchantment "whenever enchanted creature taps you buy a card" it is not going to work?
The enchant will work fine. It just won't trigger when the creature attacks.