[card]Chalice of the Void[/card]
Text: Chalice of the Void comes into play with X charge counters on it.
Whenever a player plays a spell with converted mana cost equal to the number of charge counters on Chalice of the Void, counter
To have it come into play with 3 counters, X must be 3, which means you have to pay
{3} or 
mana. You pay twice of whatever value you want X to be.
It only checks the number of counters on this card at the time the spell is being played. Changing the number of counters after that will not change the outcome.
If it has zero counters on it, then it triggers for spells of cost
.
[card]Stifle[/card]
An activated ability has a "Cost: Effect" format. Look for the colon. A triggered ability starts with "when", "whenever", or "at".
It can target delayed triggered abilities. For example, a card that says "Whenever a player cycles a card, you may remove target creature from the game. If you do, return that creature to play at end of turn." triggers when a player cycles a card and creates a delayed trigger that happens at end of turn. You can choose to target the "at end of turn" trigger when it is placed on the stack at end of turn.
Game actions like the normal card, combat damage, or turning a face-down creature face up cannot be targeted
Quindi penso di no. Non puoi stiflare i segnalini che vengano messi quando entra in gioco, poichè sarebbe un costo di lancio.
Puoi stiflare se metti in pila La magia che vuoi lanciare e poi stiflare la triggered di chalice per quella magia attuale.
Esempio: Chalice a 2
Gioco oath e poi faccio stifle su chalice in risposta alla sua trigger.
Dovrebbe essere corretta così, penso.