I have quite a few cards that have the ability to create creature tokens when they're played or their ability is activated. The only problem is I don't have the specific token for each one, but I have a handful of other creature tokens.
Can I substitute creature token Y for creature token X? For example, if the ability allows creating two 2/2 Black Zombies, but I don't have any Black Zombie tokens, could I use, say, a Green Wolf and a White Human to substitute as placeholders? I don't see why not since the tokens are pretty much empty objects that are filled in whenever they're brought into battle.