When CARDNAME dies, return it to the battlefield under target opponent's control at the beginning of the next end step
Ovika triggers off anything noncreature, and a huge number of the tokens wincons in that deck are already enchantments, like Impact Tremors, Goblin Bombardment, City on Fire, Purphoros, God of the Forge, Sorcerer Class, Shared Animosity, Shark Typhoon, Sunbird's Invocation, Fiery Inscription, Mana Echoes, Cavalcade of Calamity, plus a dozen more, so perhaps just lean in
You really want this Dimir commander to partner with Cazur, Ruthless Stalker to have a way to grow it, but it works just fine solo or as a Cube threat so long as you have plenty of equipment like Sword of Fire and Ice to buff it
Cards like Fiery Emancipation, Thousand-Year Storm, and Niv-Mizzet, Parun can drop away with a touch of burn, and Izzet stalwarts like Goblin Electromancer, other spellslinger cards like Archmage Emeritus, and then a suite of blue countermagic can amp up the attack