Ancestral Vision
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SorceryAncestral Vision is blue. Suspend 4-U (Rather than play this card from your hand, pay U and remove it from the game with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, play it without paying its mana cost.) Target player draws three cards.
Isochron Scepter

Artifact
Imprint - When Isochron Scepter comes into play, you may remove an
instant card with converted mana cost 2 or less in your hand from the game. (The removed card is imprinted on this artifact.)

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: You may copy the imprinted instant card. If you do, you may play the copy without paying its mana cost.
There's a reason the rules say to post the Oracle text of the cards you're asking about, and part of it is so that you can catch stuff like this yourself.