MagicLpAggregator would be used to price MagicLP collateral for Cauldrons. 
Something to note is that the MagicLP Oracle is only meant for closed-together price pool. 
It's just that the oracle is not meant to be used for any kind of MagicLP, just for closely priced tokens like MIM/USDB.
function latestAnswer() public view override returns (int256) {
        uint256 baseAnswerNomalized = uint256(baseOracle.latestAnswer()) * (10 ** (WAD - baseOracle.decimals()));
        uint256 quoteAnswerNormalized = uint256(quoteOracle.latestAnswer()) * (10 ** (WAD - quoteOracle.decimals()));
        uint256 minAnswer = baseAnswerNomalized < quoteAnswerNormalized ? baseAnswerNomalized : quoteAnswerNormalized;

        (uint256 baseReserve, uint256 quoteReserve) = _getReserves();
        baseReserve = baseReserve * (10 ** (WAD - baseDecimals));
        quoteReserve = quoteReserve * (10 ** (WAD - quoteDecimals));

+        uint256 totalSupply = pair.totalSupply() * (10 ** (WAD - baseDecimals));

-        return int256(minAnswer * (baseReserve + quoteReserve) / 
pair.totalSupply());
+        return int256(minAnswer * (baseReserve + quoteReserve) / 
totalSupply);
}
