Other Knights you control get +2/+2 and have protection from Assassins.
When Haytham Kenway enters, for each opponent, exile up to one target creature that player controls until Haytham Kenway leaves the battlefield.
Build a wide, evasive Knights battalion in Azorius, pump your team with Haytham's anthem, and grind through combat while controlling the board. Haytham's ETB acts as repeatable removal—blink or recast him to keep exiling threats—while your buffed Knights close the game with efficient beatdowns backed by white removal and blue protection.
Built-in anthem (+2/+2) makes even cheap Knights hit hard
ETB removal that scales with opponent count and can be reused via blink/recast
Azorius gives premium removal, counterspells, and protective interaction
Knight tribal has deep, cheap, aggressive support in white
Anthem and ETB are wasted in non-tribal builds—heavily reliant on Knights
Losing Haytham returns all exiled creatures, swinging the board against you
UW lacks ramp and card advantage compared to other color pairs
Vulnerable to board wipes that erase your wide, low-toughness army