Gollum, Scheming Guide (Extended Art) [LTR - 390] Standard it's gets +1/+0 until end

it's gets +1/+0 until end of turn for each attacking creature

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Rules Text Contains: This land enters tapped unless you control a Forest or a Plains

then choose a legendary creature card name with the same mana value as that card

Gollum, Scheming Guide (Extended Art) [LTR - 390] Standard it's gets +1/+0 until endRarity: R #: 390 Creature Type or Sub Type: Legendary Creature Halfling Horror P: 2 T: 1 Rules Text Contains: Whenever Gollum, Scheming Guide attacks, look at the top two cards of your library, put them back in any order, then choose land or nonland. An opponent guesses whether the top card of your library is the chosen kind. Reveal that card. If they guessed right, remove Gollum from combat. Otherwise, you draw a card and Gollum can't be blocked this