For example, you could put a creature into one pile and an Aura enchanting that creature into the other pile
If you gain some life, you get energy, and you can use that energy to pay into the X part f the cost instead of mana
Leaping Ambush
How many keyword soup creatures can you put in your deck, and how might you put some of them in the graveyard to pump all your other creatures
It came in a very simple, but thick, gaudy, and bright gold frame
As is, the removal in Standard is so good that relying on untapping with Etali, Primal Storm on the battlefield is unreliable at best, and you need to untap with this six-drop unless you can give it haste to make playing it worthwhile