I play Pyre of Heroes in my favorite cEDH deck because of the ease with which I can do this by sacrificing cheap creatures in order to protect my win
Not a pig, not a swarm of spiders, and not a clone
To top things off it lets you cast a 5-drop from your hand without paying its cost, effectively making it a 1-mana draw spell with an upside
10s are extremely hard to come by, especially the pikachu in particular
You can use it in Yisan, the Wanderer Bard decks, where you can quickly fetch for it at the moment of need
Then there are different leaders with activated abilities that can turn into creatures late in the game, and these leaders drive many different strategies, so no two decks are equal