鱗の焦熱、ゲヴ

護法―２点のライフを支払う。
あなたがコントロールしていてこれでないすべてのクリーチャーは、このターンにライフを失った対戦相手１人につき１個の追加の＋１/＋１カウンターが置かれた状態で戦場に出る。
あなたがトカゲ・呪文１つを唱えるたび、対戦相手１人を対象とする。鱗の焦熱、ゲヴはそのプレイヤーに１点のダメージを与える。

Gev, Scaled Scorch

Ward—Pay 2 life.
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.

Bloomburrow

Ward—
Pay 2 life.
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, Scaled Scorch deals 1 damage to target opponent.

Bloomburrow Promos

Gev's second ability cares whether opponents lost life this turn, not how their life totals changed. For example, an opponent who gained 2 life and lost 1 life in the same turn still lost life.

In the case where Gev and one or more other creatures enter at the same time, those creatures won't enter with additional +1/+1 counters, even if one or more opponents lost life this turn.