Understatted, overcosted nightmare fuel
Instead, Tiamat acts as a consistency card that lives in your command zone
Creatures that cheat equip costs love Colossus Hammers absurd power boost
I was honestly pretty underwhelmed when first reading Kari Zev, Shyship Raider, but in testing it has always been a solid card
Otherwise, Kykar is typically best in combo decks that will be able to take advantage of the value generated by playing a lot of spells until you can go infinite or win through a mass of 1/1s
It can certainly play into aggressive strategies by picking up the likes of All That Glitters and Duelist's Heritage, but it's best known as a more controlling stax commander in builds that focus on tutoring up cards like Stony Silence, Rest in Peace, and Rule of Law to prevent your opponents from playing altogether