Truthful Denial

As an additional cost to cast Truthful Denial, either reveal your hand with at least 1 card or pay {1}{u}.
Counter target spell. If Truthful Denial was catalysed, exile target spell instead.
Catalyst {u}{u} ({u}{u}, reveal this card from your hand: exile target spell you control, then cast it without paying its mana cost. You must choose the same targets if possible.)
"That's not how you do it, young one."