This card's name becomes "Forest" while it is in your field. Beast monsters gain 300 ATK/DEF. You can only use each of the following effects of "Crystterious Plains" once per turn. ● You can Tribute 2 "Crystterious" monsters; Special Summon 1 Level 10 or lower "Crystterious" Request Monster from your Extra Deck, but it has its effect(s) negated, also return it to the Extra Deck if it leaves the field. (This is treated as a Request Summon.) ● If you Request Summon a "Crystterious" Request Monster from your Extra Deck to an Extra Monster Zone: You can move that monster to 1 of your unoccupied Main Monster Zones.