Coretapper

T, Pay 1 life: Add B. Put a hatchling counter on this land. When this land is put into a graveyard from the battlefield, for each hatchling counter on it, create a 1/1 black Insect creature token with flying.

You draw two cards and lose 2 life.

Lands you control enter untapped. Whenever you attack a player, create a Lander token. (It's an artifact with "2, T, Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.")

Flying Whenever you cast a noncreature spell, incubate X, where X is that spell's mana value. (Create an Incubator token with X +1/+1 counters on it and "2: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)

This land enters tapped unless you control a Mountain or a Plains. T: Add R or W.

Affinity for artifacts (This spell costs 1 less to cast for each artifact you control.) Flying When this creature enters, draw two cards.

This creature enters with two +1/+1 counters on it. 1, Discard a card: Put a +1/+1 counter on this creature. Remove two +1/+1 counters from this creature: Draw a card.

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.