Destined on the stack is still a black instant with a converted mana cost of 2, and Lead on the stack is still a green sorcery with a converted mana cost of 4, but Destined to Lead, any time it's not one or the other, is a black and green instant sorcery with a converted mana cost of 6
You can also avoid losing the game in a given turn, but its not that safe since youll return to the game with only 1 life
In CeDH, for instance, a deck like Kinnan that has lots of ways to make infinite mana can use this early game Farm piece to literally draw their entire deck
If you dont have the biggest creature in play, you get to distribute a +1/+1 counter on a creature you control, helping you reach the level needed to start drawing cards
For just one mana at sorcery speed, you make a single Treasure, so you invest one mana now, and a spell, for one mana in the future of any color