Chaotic Nexus

Chaotic Nexus enters the battlefield with X
chaos counters on it.
At the beginning of your upkeep, roll a six-sided
die. Remove a chaos counter from Chaotic Nexus
for a result of 1 or 2. Add that much mana in any combination of colors to your mana pool for each result of 3, 4, 5, or 6.
As long as Chaotic Nexus has no chaos
counters on it, creatures you control have
hexproof.