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Enduring Curiosity is a powerful example, and other Coastal Piracy effects tend to be quite popular

Instant-speed, near-free sacrifice outlets are always worth considering

If you play a dinosaur deck, you can also benefit from basic typal support like Patchwork Banner, Herald's Horn or Kindred Discovery

Otherwise, there are fantastic favorites like Thran Dynamo, Bubbling Muck, and Elvish Piper from Urza's Destiny

Outside of saving your creatures from targeted removal or sweepers, Galadriels Dismissal is equally apt at stopping an opponent from making a ridiculous number of Inklings with a well-timed Inkshield as it is at saving the table from a Craterhoof Behemoth cast into a huge board