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'Reach (This creature can block creatures with flying.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
'When this creature enters, search your library for a Forest card, put that card onto the battlefield, then shuffle.
'{T}: Target creature gets +X/+X until end of turn, where X is the number of Elves on the battlefield.
'{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.
'When this creature enters, search your library for a Forest card, put that card onto the battlefield, then shuffle.
'Other Elf creatures you control get +1/+1.
{T}: Add {G} for each Elf you control.
'Other Elf creatures you control get +1/+1.
{T}: Add {G} for each Elf you control.
'{T}: Add {G}.
'Each other creature you control enters with a number of additional +1/+1 counters on it equal to Arwen's toughness.
'Whenever one or more artifacts you control enter, put two +1/+1 counters on this creature. This ability triggers only once each turn. Whenever one or more enchantments you control enter,...
'Put a +1/+1 counter on target creature. That creature gains reach until end of turn. (It can block creatures with flying.)
'Other Elf creatures you control get +1/+1.
{T}: Add {G} for each Elf you control.