Some cards, like Gale - Wind Spirit, let players return the card to their hand when it is banished, while other cards allow players to draw new cards into their hand
I would not play more than one or two of these, since they compete at a slot where the best spells are
Edric is miles better than Prophet
It can also be used as a combat trick, allowing you to spread Auras and Equipment between several creatures, then move them to the ones that weren't blocked , or even to save an important creature by moving your Lightning Greaves onto a creature being targeted by a removal spell.
The Big Finishers Choose finishers that become stronger as you control more creatures, like cards that give your entire army a massive power boost for one turn
You might also notice that it takes a moment for the card to return to its flat shape