By forcing them to stay exerted, you also keep them vulnerable to additional challenges, making it far more risky for your rivals to use their characters with this card in your deck
Each opponent sacrifices a creature or planeswalker with the greatest mana value among creatures and planeswalkers they control
When you discard Calim, conjure a card named Calim, Djinn Emperor into your library seventh from the top
Centering is one of the factors that a cardholder has no real control over
It might be a specialized class, but as one of the strongest Izzet enchantments, it would fit really well in a spellslinger deck like Veyran, Voice of Duality
Knowing youre the only one that can play combat tricks or removal spells during combat makes it much easier to decide who to attack with what creatures