Kaiju was shocked. If he recalled correctly, Snow mentioned receiving some mana potions that aids in increasing the mana points from Lucy. However, what he was about to receive was an artifact, with effects that could boost his meditation efficiency. In addition, it even provides healing during the meditation. He was in disbelief.
'System, calculate the effectiveness of this stone in meditation.'
{It is assumingly can increase five times.}
Kaiju drew a cold breath. If it was five times, then… He began to calculate. Lately, he has been beginning to feel the difficulty of increasing mana points. After three months of constantly meditating, he felt it has slowed down. Often, it would take a day to increase it.
Hence, with the stone, it would reduce to half a day, or even less. The only downside was there was a limitation, which was obvious in the Minutes Used below, but Kaiju felt it was worth it.