Id only avoid this if I had a fairly low curve and just wanted to attack with cheap creatures, as its ultimately just another mana source if the game goes long enough
Avatar Kyoshi, Earthbender Avatar Kyoshi, Earthbender is massive and the combat triggered ability is massive earthbending
One of the best cards of its class for fast mana
If you want multiple activations out of an expensive Equipment (say, Dragon Throne of Tarkir) in a single turn, then this basically gives that Equipment an alternative cost of sacrificing the equipped creature to pass it down to its next-of-kin
Chromatic Orrery is easily among the most versatile EDH cards in the set
Chance Encounter shines with Yusri, Fortunes Flame, or the duo of Okaun, Eye of Chaos, and Zndrsplt, Eye of Wisdom, where you can realistically flip ten coins in a single turn