When it swings, you dig seven cards deep for an instant or sorcery with mana value equal to or less than its power and cast it for free
Ugin, Eye of the Storms - $65 Again, here we have the regular version coming in slightly higher than a borderless or showcase version
Release to the Wind and Valki together allow for instant transformation, but the mana investment is harder to justify in a format like Modern
I must say, Liga Smilshkalne, now has my second favorite counterspell art of all time, behind only the original Force of Will by Terese Nielsen
Most of these can be completed by accident while playing, but if you're desperate for some items, this is a great way to earn them
But you have the flexibility to make your bounce spell fit the situation, and note that it wont bounce your awaken lands either