You can see that in their records for the first set that was printed in nine languages, 4th Edition , that nothing seems to show up in that many prints, and its usually more like seven
(If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.) Creature - Elf Druid Color tag templates(None) Iridescent Hornbeetle At the beginning of your end step, create a 1/1 green Insect creature token for each +1/+1 counter you've put on creatures under your control this turn
For a very solid and highly detailed look at this aspect of MTG collecting, I recommend this fantastic article by Guo Heng Chin
(You may cast cards from your graveyard for their escape cost.) If The Master of Keys is no longer on the battlefield when its second ability resolves, you'll still mill twice X cards
If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped
"The numbers I found should be taken as more of a minimum value, knowing that the actual number of cards found can only be higher." You can find Visual-Whole-8187's findings so far in their original Reddit post