What crystals should I use for tanking at lv 65-70 maps?

[Pokerealm 0]

Mystic Crystals don't seem effective enough anymore, especially when they summon Hopy or Decoy, which happens a lot. Would it be better to just buy Hulk crystals even though they're much more expensive? Or would King Hopy be good enough? I usually have 4-6 crystals active at a time. Mainly grinding in Sanctuary of Darkness till I reach level 80.

[sotkulaja 4]

Spawn 10 hulks and let them kill. Loot all the money while running around.

[kenibok 1,060]

Hulk will work fine, also Occult Crystal, Doomed Crystal, Guardian Saint, Iron Crystal, Chaos Crystal. Loot Occult Crystal while u are at Sanctuary of Darkness, the rest you'd have to buy.

Good Luck!