Strive — This spell costs {1}{G} more to cast for each target beyond the first. Choose any number of target creatures. Double the number of +1/+1 counters on each of them.
When Somberwald Beastmaster enters the battlefield, create a 2/2 green Wolf creature token, a 3/3 green Beast creature token, and a 4/4 green Beast creature token. Creature tokens you control have deathtouch.
I, II — Until your next turn, creatures you control gain "{T}: Add one mana of any color." III — Put a +1/+1 counter on each creature you control. Those creatures gain vigilance, trample, and indestructible until end of turn.
Choose up to two target permanent cards in your graveyard. Roll a d20 and add the total mana value of those cards. 1—14 | Return those cards to your hand. 15+ | Return those cards to your hand. You gain life equal to their total mana value.
Create two 1/1 green Snake creature tokens. Whenever a nontoken Snake enters the battlefield under your control, you may return Sosuke's Summons from your graveyard to your hand.
Trample Delirium — At the beginning of your upkeep, if there are four or more card types among cards in your graveyard, put three +1/+1 counters on Soul Swallower.
Being engulfed is just the beginning of the nightmare.
Reach {3}{G}{G}: Create a 3/3 green Beast creature token. {3}{G}{G}, Exile Soul of Zendikar from your graveyard: Create a 3/3 green Beast creature token.