Sylvan Caryatid

5RR: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When this creature becomes monstrous, each player sacrifices three lands of their choice.

T: Add an amount of G equal to your devotion to green. (Each G in the mana costs of permanents you control counts toward your devotion to green.)

Heroic — Whenever you cast a spell that targets Anthousa, up to three target lands you control each become 2/2 Warrior creatures until end of turn. They're still lands.

6UU: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.) When this creature becomes monstrous, tap up to four target creatures. Those creatures don't untap during their controllers' untap steps for as long as you control this creature.

Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on each creature you control.

Bestow 5WW (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Flying, first strike Enchanted creature gets +4/+4 and has flying and first strike.

Flying When this creature enters, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black. (Each B in the mana costs of permanents you control counts toward your devotion to black.) At the beginning of your upkeep, sacrifice a creature.

Bestow 2BB (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) This creature and enchanted creature each get +X/+X, where X is the number of creature cards in all graveyards.