Whenever another Human you control enters, put a +1/+1 counter on Kyler.
Other Humans you control get +1/+1 for each counter on Kyler.
Flood the board with cheap Humans, snowballing counters onto Kyler that anthem your entire team into a lethal army. You curve out Human producers and go-wide enablers, then alpha strike or pump through with a single big swing once Kyler's counters make every creature huge.
Explosive scaling anthem that turns even token Humans into serious threats
Strong tribal support in GW with cheap, efficient Human creatures
Can rebuild quickly thanks to wide token generation and counter retention via proliferate
Closes games fast once Kyler accumulates a handful of counters
Heavily reliant on the commander; removing Kyler collapses the anthem and resets the board's power
Vulnerable to board wipes given the go-wide plan
No built-in evasion or protection, so a single Fog or blocker can stall the alpha strike
Counters on Kyler reset if he's destroyed, unlike permanent counters elsewhere