While not as splashy, cards like Once Upon a Time and Expressive Iteration gave specific color identities too much of an advantage when it came to finding specific cards, making combo decks in those colors much easier to play
A creatures converted mana cost is determined solely by the mana symbols printed in its upper right corner (unless that creature is the back face of a double-faced card, a melded card, or is copying something else
Creature Artifact - Human Soldier Color tag templates(None) Etali, Primal Conqueror Trample When Etali enters, each player exiles cards from the top of their library until they exile a nonland card
Quite an ultimatum
If that player decides to not pay that cost, you must propose a new set of blocking creatures
Looters and rummagers usually only trade out a single card at a time, but some let you pick and choose how many cards you discard/draw