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'{T}: Target creature gets +X/+X until end of turn, where X is the number of Elves on the battlefield.
'When this creature enters, search your library for a Forest card, put that card onto the battlefield, then shuffle.
'{T}: Until end of turn, target Forest becomes an X/X Treefolk creature in addition to its other types, where X is the number of Elves you control.
'Other Elf creatures you control get +1/+1.
{T}: Add {G} for each Elf you control.
'Reach
When this creature enters, you may put a land card from your hand onto the battlefield tapped.
'Kicker {3} (You may pay an additional {3} as you cast this spell.) When this creature enters, if it was kicked, all creatures able to block target creature this turn...
'First strike
'Whenever another Elf enters, put a +1/+1 counter on this creature.
'Trample
Whenever this creature enters or attacks, return target Elf card from your graveyard to your hand. You gain life equal to that card's power.
'(This land isn't a spell, it's affected by summoning sickness, and it has "{T}: Add {G}.")
'{T}: Add {G}.