Abstract
Fernando Galve \emph{et al.} introduced discording power for a two-qubit unitary gate to evaluate its capability to produce quantum discord, and found that a gate has maximal discording power. This work analyzes the entangling power of a two-qubit unitary gate, which reflects its ability to generate quantum entanglement in another way. Based on the renowned Cartan decomposition of two-qubit unitary gates, we show that the magic power of the gate produces maximal entanglement for a general value of purities for two-qubit states.