Suspend and Teferi...

[GUnit]

OK, just one question now:

If I have Teferi in play, can I suspend a creature card during my opponent's turn?

[Roxas]

Short answer: yes.

Long answer:

Teferi, Mage of Zhalfir {2UUU} |Legendary Creature -- Human Wizard| 3/4. Flash / Creature cards you own that aren't in play have flash. / Each opponent can play spells only any time he or she could play a sorcery.

502.59a. Suspend is a keyword that represents three abilities. The first is a static ability that functions while the card with suspend is in a player's hand. The second and third are triggered abilities that function in the removed-from-the-game zone. "Suspend N-[cost]" means "If you could play this card from your hand, you may pay [cost] and remove it from the game with N time counters on it. This action doesn't use the stack," and "At the beginning of your upkeep, if this card is suspended, remove a time counter from it," and "When the last time counter is removed from this card, if it's removed from the game, play it without paying its mana cost if able. If you can't, it remains removed from the game. If you play a creature spell this way, it gains haste until you lose control of the spell or the permanent it becomes.

Since you can suspend cards whenever you are able to play those cards, and Teferi allows you to play creatures whenever you may play an instant, you may suspend creatures any time you may play an instant.

[Arsenal]

Can you alternately Stifle a Suspend card?  I'm still unclear.  If I wanted to Stifle the 2nd triggered part of a Suspended card, then it would remain in the RFG zone forever, doing nothing.  That's what I want to happen.  But can Stifle even target an ability that's in the RFG zone?

[Clariax]

The card is in the RFG zone.  The ability is on the stack.  Stifle targets the ability, on the stack, not the card.

The triggered abilities associated with suspend are legal targets for Stifle, yes.  If the "play this" trigger is countered, then the RFG'd card doesn't get played.  It now has no time counters on it, so it's not suspended anymore, it just stays there in the RFG zone. 

Can you alternately Stifle a Suspend card?  I'm still unclear.  If I wanted to Stifle the 2nd triggered part of a Suspended card, then it would remain in the RFG zone forever, doing nothing.  That's what I want to happen.  But can Stifle even target an ability that's in the RFG zone?

[Arsenal]

So... I can Stifle my opponent's Ancestral Vision at the correct moment, and he gets nothing?

[Anusien]

So... I can Stifle my opponent's Ancestral Vision at the correct moment, and he gets nothing?

You can Stifle the "play this card" trigger and the card stays RFG, yes.