pragma solidity ^0.6.0;

// Define the contract
contract DealMaker {
    // Set up the multisig contract
    address[] public signatories;
    uint public requiredSignatures;
    mapping(address => bool) public isSignatory;

    // Define the terms of the deal
    string public dealDescription;
    uint public dealValue;
    address public recipient;

    // Set up the contract
    constructor(address[] memory _signatories, uint _requiredSignatures, string memory _dealDescription, uint _dealValue, address _recipient) public {
        signatories = _signatories;
        requiredSignatures = _requiredSignatures;
        dealDescription = _dealDescription;
        dealValue = _dealValue;
        recipient = _recipient;

        // Set up the signatories
        for (uint i = 0; i < signatories.length; i++) {
            isSignatory[signatories[i]] = true;
        }
    }

    // Review and sign the contract
    function signContract() public {
        require(isSignatory[msg.sender], "You are not a signatory of this contract.");
        // Implement a mechanism to track signatures here
    }

    // Execute the deal
    function executeDeal() public {
        require(isSignatory[msg.sender], "You are not a signatory of this contract.");
        // Implement a mechanism to check if the required number of signatures have been collected here
        require(/* required signatures have been collected */, "Not enough signatures have been collected to execute the deal.");
        recipient.transfer(dealValue);
    }
}

This code defines a contract called DealMaker that allows multiple parties to review and sign a contract, and then execute the deal once the required number of signatures have been collected. The contract is set up to accept an array of signatories, a required number of signatures, and the details of the deal (including the deal value and the recipient of the funds). The signContract function allows parties to sign the contract, and the executeDeal function allows the deal to be executed once the required number of signatures have been collected.