Suppose a node in a proof-of-stake blockchain network wants to forge a blockchain. I'm wondering what should this node do to forge it? Assume this node has a certain amount/fraction of money (but no more than 50%) in the network.
It seems to me proof-of-stake blockchain is easier to forge because the node can simulate the whole processes (including leader selection in every round and consensus on the block) by itself. Unlike proof-of-work blockchain like bitcoin, any node who wants to forge a blockchain has to do mining and compute the nonce to solve the hash puzzle. Can anyone describe a complete procedure to forge a Proof-of-Stake blockchain?