Every card with morph gives you the option to cast it face-down as a creature spell for 3 mana
Its as if the designers tried to say: Hey, if youre bad at deck-building, heres at least some extra health for you. A good deck utilizes mana very accurately, and you almost never should end up with excess mana, unless something totally unexpected happens
In Limited, for example, this could be a solid role-player if you pick enough things that will benefit from its typing and resolution
You dont need to be firmly in a tokens deck to take advantage of some of these, as theyll trigger for making treasure, or playing creature cards, too
Cards like Throne of Geth have seen play in Hardened Scales in Modern to spread +1/+1, -1/-1, and poison counters with proliferate
They are not overly common to see as typically Jace's draw cards and that ends games before ultimates tend to