Wouldn't it be hilarious to give away something like True Conviction to your foe with Harmless Offering or Bazaar Trader
However, Braids's controller can benefit more from such an ability by constructing a deck to plan accordingly for this ability and always get the optimal value out of the effect, directly playing cards like the infamous Blightsteel Colossus and Eldrazi titans for free
Hermes, Overseer of Elpis* Another take on a Talrand type of effect, this trades down the size of the creatures for typal Bird synergies (vigilance!), and scrying
Even still, a wizard is never late, nor is he early, he arrives precisely when he means to and hopefully with a pricey Wizard promo card to boot.
It reads: As long as this spell is on the stack, players cant cast spells or activate abilities that arent mana abilities. If this was able to stop a player from morphing a creature then Sudden Shock would be a great answer to morph creatures