At least for the most part, that was how many cards had been in booster packs in Magics history, though some sets have experimented with smaller and larger pack sizes
Previously, the ability could be used even if there were no cards to be drawn, allowing for Fossil control players to shuffle the discarded card back into their hand without worrying about decking out
This top 10 list contains some of my favorite ways to protect your creatures and other permanents from board wipes and other removal
You will need the mana up front, but by returning the Dragon to our hand and Cycling it again, we will trigger Astral DriftAstral Drift, bouncing one of the creatures to untap our lands and netting us a land every turn for free
One thing not to underestimate about casualty is that only half of the effect will be stoppable by a regular counterspell, which gives the casualty spells in general some added reach in metagames heavy on counters