You can only use each effect of "Evilswarm Kerykeion" once per turn. While this card is in the Graveyard, if it was sent there this turn, you can Normal Summon 1 "lswarm" monster for 1 less Tribute.
You can banish 1 "lswarm" monster from your Graveyard; then target 1 "lswarm" monster in your Graveyard; add that target to your hand, also, this card gains the following effect.
• This turn: You can activate this effect; Normal Summon 1 "lswarm" monster.