Rogue Elephant

When Rogue Elephant enters, sacrifice it unless you sacrifice a Forest.

Elephant Guide

Enchant creature
Enchanted creature gets +3/+3.
When enchanted creature dies, create a 3/3 green Elephant creature token.

Aerial Volley deals 3 damage divided as you choose among one, two, or three target creatures with flying.

Reach
When Arboreal Grazer enters, you may put a land card from your hand onto the battlefield tapped.

When Harvest Wurm enters, sacrifice it unless you return a basic land card from your graveyard to your hand.

Untap target creature you don't control. That creature blocks this turn if able.
Draw a card.

Target creature gains deathtouch until end of turn.
Draw a card.

Hornet Sting deals 1 damage to any target.

Tranquil Thicket enters tapped.
{T}: Add {G}.
Cycling {G} ({G}, Discard this card: Draw a card.)

When Radiant Fountain enters, you gain 2 life.
{T}: Add {C}.

Enchant creature
When enchanted creature dies, you draw two cards.

Sacrifice Sakura-Tribe Elder: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Sacrifice Spore Frog: Prevent all combat damage that would be dealt this turn.

Shroud (This creature can't be the target of spells or abilities.)
When Scythe Tiger enters, sacrifice it unless you sacrifice a land.

Target creature gets +3/+3 until end of turn.

You gain 4 life. If a creature died this turn, you gain 8 life instead.

Treetop Scout can't be blocked except by creatures with flying.