Blanchwood Armor

Enchant creature
Enchanted creature gets +1/+1 for each Forest you control.

Civic Wayfinder

When this creature enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Hexproof
Drove of Elves's power and toughness are each equal to the number of green permanents you control.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

This creature can't be blocked except by Walls and/or creatures with flying.

Other Elf creatures get +1/+1 and have forestwalk. (They can't be blocked as long as defending player controls a Forest.)

Sacrifice this creature: You gain 1 life for each Elf card in your graveyard.

Create a 1/1 green Elf Warrior creature token for each Elf you control.

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

Reach (This creature can block creatures with flying.)

Create a 2/2 green Wolf creature token for each Forest you control.