Llanowar Druid

Cast this spell only during the declare blockers step. X target attacking creatures become blocked. Choking Vines deals 1 damage to each of those creatures. (This spell works on creatures that can't be blocked.)

Haste (This creature can attack and T as soon as it comes under your control.) When this creature enters, tap all other creatures.

This creature enters with four shell counters on it. At the beginning of your upkeep, remove a shell counter from this creature. As long as this creature has no shell counters on it, it gets +3/+2 and has flying.

Cumulative upkeep 2 (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) When a player doesn't pay this enchantment's cumulative upkeep, this enchantment deals X damage to target player or planeswalker and each creature that player or that planeswalker's controller controls, where X is twice the number of age counters on this enchantment minus 2.

WW, T: Destroy target red permanent.

Flying When another creature enters, return this creature to its owner's hand.

Flying Pay 1 life: Regenerate this creature.