The Massive Zatcatl

Whenever you cast a creature spell, you may draw a card.

Whenever you tap a land for mana, add one mana of any type that land produced. (The types of mana are white, blue, black, red, green, and colorless.)

Whenever you cast a creature spell, draw a card.

Whenever a creature you control deals combat damage to a player, add that much . Until end of turn, you don't lose this mana as steps and phases end.

When this creature enters, you may sacrifice another creature. If you do, you gain X life and draw X cards, where X is that creature's power.

Whenever a creature you control with toughness 4 or greater dies, draw a card.

Trample

Whenever you tap a land for mana, add .