Other creatures you control enter with an additional +1/+1 counter on them for each opponent who lost life this turn.
Whenever you cast a Lizard spell, Gev deals 1 damage to target opponent.
Gev is an aggressive BR midrange/aristocrats deck that snowballs board presence through damage. Early turns you ping opponents with Lizard spells and cheap pressure to ensure 'opponent lost life this turn' is checked, so every subsequent creature lands with stacked +1/+1 counters. You then convert that oversized board into damage via attacks, ping triggers, and burn finishers.
Cheap, two-mana commander that rebuilds quickly and has Ward to dodge removal
Snowballing counters make even mediocre creatures into real threats
Lizard tribal pings double as repeatable reach and direct opponent damage
Naturally aggressive in three-player pods where multiple opponents lose life
The counter ability requires opponents to lose life first, so it whiffs on empty boards or stalled turns
Heavily reliant on the commander; without Gev the deck loses its payoff engine
Vulnerable to board wipes that erase your invested counters
Lizard typal support is thin, limiting how reliably you trigger the cast ability
A Lizard that triggers Gev's burn on cast and benefits from the counter snowball.
Add consistent early life-loss enablers (Impact Tremors, Purphoros, cheap burn, sac outlets) so creatures reliably enter with counters, and prioritize a stronger Lizard density to maximize the cast trigger. Improve the mana base with fast lands and Treasure/ritual support to deploy multiple spells per turn, and include counter-payoffs like proliferate or anthem effects. Round out with protection and recursion (Bolas's Citadel, reanimation) to survive wraths and keep Gev online.