Even without it, the choice between an effective 4-mana threat or free disruption would have made this a fantastic card
(If unsolved, solve at the beginning of your end step.) Solved Whenever you cast a nonlegendary creature spell, copy that spell
When paired with a bounce card like Madam Mim, Snake or Fox, you create a lore generating-card drawing cycle as you bounce Yen Sid back into your hand
Chase mythics in Commander-focused sets tend to hold value better than combo pieces that can be banned, making the Cosmic Cube a safer long-term hold than Bruce Banner if competitive bans become likely
(1/12/2024) You can tap any untapped creature you control to convoke a spell, even one you haven't controlled continuously since the beginning of your most recent turn
A Guide for Illuminators Learn new strategies and discover the stories behind the cards