You're trying to get the outside person to guess the creature based on your expressions and movements
This became salientized in card-play because of having an established rule-set and, increasingly, the growing industrialization of card-making
It is really a shame that this isn't a particularly flavourful card in terms of effect, with nothing in the art or flavour text having any connection to sacrificing a swamp to regenerate a creature
You put it together and play it like this, then you can start leaning in a direction - more Tokens
In my previous article we reviewed just the legendary creatures from LTR, discussing which ones will be popular as commanders or in the 99 of other decks
It causes both creatures and nonbasic lands opponents play to enter the battlefield tapped, allows you to play an extra land every turn, and makes it so that you have to sacrifice a creature or land when it attacks, and then draws you a card