Theres not much more to it than that, in terms of rules
That is to say that, if a character has Shift and needs to be placed on top of a character of the same name, they can instead be placed onto Morph, Space Goo
Contested Cliffs You're not interested in Contested Cliffs unless you're in a typal deck full of beasts and/or changelings, but in those decks exactly, this is an awesome repeatable source of removal attached to a utility land
Unlike with Scion, Ur-Dragon does not need to differentiate between on-board effects and enters the battlefield effects - all spawn are equal in the eyes of the Father
Or maybe something related to sacrifice and recursion, like Eternal Witness and Viscera Seer
Gamechangers for the Gitrog Monster Isshin, Two Heavens As One Isshin, Two Heavens as One has just one simple ability, but its elegance and simplicity belies its power