Complex sentence: He understands that the whole plot is master minded by the Shrewd Krishna and accepts his fate in return a messenger from Indra offers a powerful weapon Vimala which can destroy one among the pandavas.
Split into simpler sentences: He understands that the whole plot is masterminded by the shrewd Krishna and accepts his fate. The messenger from Indra offers a powerful weapon "Vimala" which can destroy one among the Pandavas.