At first glance, Stitch in Time seems like one of the joke cards from Unglued or Unhinged series
It's not a card you want to play on turn 3, but come turn 5-6, it has the ability to be a game changer, whether you're flashing back an important early game spell, or using the Harmonize ability to cast an expensive spell at a reduced rate
But its impossible to talk about pursuing efficiency without addressing the elephant in the room: content creation
Where a classic Magic: The Gathering card has a large portion dedicated to standardized elements specifically aimed at streamlining gameplay, these cards get wild
Example: Basic Land Mountain means the card is a land with the subtype Mountain
However, on top of being a very aggressive two-drop, you can also pay four mana to equip them to a creature, turning that creature into a 5/5 demon and granting them menace