I'm sure those exist, I'm sure they involve Stonework Packbeast, and I'm hoping there are some versions of that game plan that are weird and use interesting, unexpected party members
The Black Chocobo buffs all of your Birds with its Landfall trigger, not just itself
Cards like Sai, Master Thopterist help you turn them into even more creature tokens, while engines such as Time Sieve and Grinding Station let you cash them in for extra turns or milling power
The second way was Disturb, which let you cast a card transformed from your graveyard
Black Market Connections Black Market Connections allows you to trade life for resources each turn, and one of the options is to buy a card for 2 life
Its also worth noting that this does not pass priority to your opponent, so you can still do something immediately after morphing a creature