Siege Wurm

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Vigilance T, Sacrifice this creature: Destroy target legendary permanent that's an artifact, creature, or enchantment.

Enchant creature Enchanted creature gets +3/+2 and has vigilance.

Destroy all creatures with toughness 4 or greater.

Destroy target creature with toughness 4 or greater.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for 1 or one mana of that creature's color.) When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.

Choose one or both — • Exile target artifact. • Exile target enchantment.

Whenever you gain life, you may pay 2. If you do, draw a card. 3W: Create a 1/1 white Soldier creature token with lifelink.