mtg cards shuffle graveyard into library Feldon's Cane [Time Spiral Timeshifted] Card that takes entire graveyard

Love and music always find a way

Being able to take Bone Saws and turn them into mana sources is very appealing and most likely will be a big player in Standard

// Vigilance On turns where the effect of Summon: Yojimbo's second or third chapter ability is applying, your opponents can choose not to attack with a creature that must attack if able as long as there is no other player, planeswalker, or battle for that creature to attack that wouldn't require a cost

Much unlike the previously mentioned Krosan Cloudscraper which offsets its own power through a drawback, all of Worldspine Wurm's abilities are strictly beneficial