Strago, Crickety Loremaster

Flash
Whenever an opponent activates a creature's
activated ability, you may pay {2}{u}{r}. If you do,
Strago, Crickety Loremaster has that ability.
You may spend mana as though it were
mana of any color to pay the activation costs
of abilities.
{u}{r}{t}: Discard a card, then draw a card.