Swampy Woods

{t}, {b}{g}
{x}, {t}, Create X amount of Dark Tree
(It's a token with "Reach, Defender, tap to gain one green or black")
When this enchantment enters the battlefield, it gives all black
and/or green creatures 3 +1/+1 counters
IF, a card with "The Walkers" subtitle enters the battlefield
then it gains haste, hexproof and 5 +1/+1 counters