he isn't telling me that lake sends for a cost

hazzelhuff: Burning lake is not a cost first off?
Star ~ Eater: my opp used fire lake is it a cost
Skulblaka98: Let's read Fire Lake, shall we
Skulblaka98: "Send 2 face-up "Burning Abyss" monsters you control to the Graveyard, then target up to 3 cards on the field; destroy those targets."
Skulblaka98: PSCT is Condition: Activation; Resolution
Skulblaka98: We see that sending the two face-up monster you control to the Graveyard occurs before the semi-colon, and thus occurs at activation
Skulblaka98: Thus, it is a cost.
Star ~ Eater: take 1000 and 1800 more
hazzelhuff: I dont think my opponent understands
Skulblaka98: At resolution, the 3 targets are destroyed. This is the effect.
Star ~ Eater: u take 1800 and 1000 more
hazzelhuff: No i dont, read what the admin said
Star ~ Eater: he telling u it a cost
hazzelhuff: No his not
Skulblaka98: ...Is what I said really that hard to understand?
Star ~ Eater: to use ureff u have to send first
Skulblaka98: "Send 2 face-up "Burning Abyss" monsters you control to the Graveyard"
Skulblaka98: This is a cost
hazzelhuff: No its not
hazzelhuff: Or i mean yes
hazzelhuff: It is a cost?
Skulblaka98: If you had bothered to read my explanation before, you would understand why that is so.
hazzelhuff: But there is no ; in it?
Star ~ Eater: take 2800 more
Skulblaka98: Are you even reading the card?
Skulblaka98: "Send 2 face-up "Burning Abyss" monsters you control to the Graveyard, then target up to 3 cards on the field;"
Skulblaka98: Take the damage.
hazzelhuff admitted defeat