The first cards the mechanic appeared on were Frodo, Sauron's Bane, Samwise the Stouthearted, and Gollum, Patient Plotter
This card is primarily the reason why youre so restricted on what non-blue cards you can play (Force of Will being a distant secondary reason), so your hands are a little tied in the deckbuilding process, but again, your options are pretty low here
+1/+1 counter archetypes are extremely popular in these colors, and both Wave Goodbye and Tributary Instructor should be immediate inclusions for the majority of those decks
And finally, you can, of course, respond to the sacrifice trigger
Sometimes we've had great applications of it, like in Modern Horizons 2 and Commander Legends, and other times it's been hard to notice, like in Strixhaven's Mystical Archive