If blue decks are desperate for cheap ways to spend their mana, this could get edged out by Geistwave, but it looks like a contender
We'll mainly lean on counters
Also, we cant forget about deathtouch-themed decks that focus on cards like Hooded Blightfang and Fynn, the Fangbearer
It also loses any creature subtypes it had
Sorcery Color tag templates(None) Ashnod's Intervention Until end of turn, target creature gets +2/+0 and gains "When this creature dies or is put into exile from the battlefield, return it to its owner's hand." Instant Color tag templates(None) Feign Death Until end of turn, target creature gains "When this creature dies, return it to the battlefield tapped under its owner's control with a +1/+1 counter on it." Instant Color tag templates(None) Fungal Fortitude Flash Enchant creature Enchanted creature gets +2/+0
The third way to take the initiative is if the player who currently has the initiative leaves the game