why can't i tribute one gravekeeper's chief for another? the monster leaves the field before the second comes, so there arent 2 chief face up.Is it a bug or am I missing something?
it says "You can only control 1 face-up Gravekeeper's Chief". When you tribute the first chief it leaves the field before the second one comes , so there aren't two face up chiefs. the wording is wrong.
The wording is correct, you logic is wrong.
You can only control 1 at any given time, meaning you can't even attempt to summon one if there is already a Chief face-up on the field. This means you cannot tribute a Chief to summon another as the attempt to summon it cannot occur.
I'm also confuse about it. Does it really have this hidden logic. Attempting to summon new one=control more than 1 face-up Gravekeeper's Chief? So if we have some magic that require a face-up card we can play it even though the summon is negate or even never occur? lol I don't think so. Check the rule pal, it even state about having 2 Gravekeeper’s Chiefs but the one will be destroyed after that.
I know the rules by heart. If any given card or effect requires the presence of another (in any shape or form), the card cannot meet it's requirements for activation and therefore cannot activate or be activated. Resolution is a different story.
The "hidden logic" as you stated is also wrong. The correct path of reasoning is as follows: GK Chief is already face-up on my field = an attempt to inherently summon a GK cannot occur as the CONDITION is active at all times. A non-targeting effect may resolve summoning a GK Chief, but will be sent to the grave as soon as it resolves as it's condition will kick in at this time.
This condition preventing another copy to face-up on the same field is identical to the mechanics behind Malefic and Kaiju. These monsters cannot be inherently summoned if another "X" creature is already there. Inherent summons refer to summoning attempts that do not start a chain, i.e. Cyber Dragon, Tribute Summon, Normal Summon/Set.
If you are attempting to summon another restricted monster through an effect, it will resolve as much as possible: An effect that targets cannot target GK Chief. An effect that would summon a card randomly will summon the card, but the card will be sent to the grave once it is considered to be on the field. An effect that chooses upon resolution may summon a GK Chief, but will suffer the same fate
I support it cannot summon side. But I must say the op logic isn't wrong it's just Konami says so. We may say the wording is correct but it's incomplete. Above comment about magic activation should be joke/sarcastic. How about "You can only control 1 face-up Gravekeeper's Chief" as op quote conflict to attempt to summon it resulting one face-up at all. That's why many player confuse with this.
It may be confusing to those with little knowledge of game mechanics. The logic IS wrong because of how summoning and activation actually occur rather than we think things happen. Once you understand the mechanics, you can see there is no room for confusion. Problem solving text (PST) can only go so far.