Jurr Xala, Underdeep Evolver

Jurr Xala, Underdeep Evolver enters the battlefield with +1/+1 counters equal to the
amount of mana spent to cast this creature.
At the beginning of your upkeep, draw half of X
cards rounded down, where X is equal to the
amount of +1/+1 counters on this creature.
"It's one of my failed experiments.... unfortunately, a failure for me would still be revolutionary." - Royan, Splicer Master