Theres different levels of this depending on what you choose to do with your cards: LEVEL 0- You have no clue what you have and you dont care, you just want out
Other white effects ask you to pay or two mana each time, but this one more than pays for itself in two triggers
Now, you can steal every creature on the board by repeatedly sacrificing The Reaper, putting counters on enemy creatures until they're all dead, and always targeting itself when it reenters to remove the +1/+1 counter Mikaeus bestows
Disney Lorcana 's fun and unique story actually manages to answer this by having players, known as Illumineers, use magical ink to call forth glimmers of these characters to the table
Then, Tribute of the World Tree can draw you cards in some cases, but it mostly makes your creatures all a bit bigger and more threatening