Nahiri, the Harbinger

Sage of Ancient Lore's power and toughness are each equal to the number of cards in your hand. When this creature enters, draw a card. At the beginning of each upkeep, if no spells were cast last turn, transform this creature.

At the beginning of your upkeep, investigate. (Create a Clue token. It's an artifact with "2, Sacrifice this token: Draw a card.") T, Sacrifice three Clues: Search your library for a card, put that card into your hand, then shuffle.

Menace (This creature can't be blocked except by two or more creatures.) When this creature dies, you may pay B. If you do, return it to its owner's hand. When this creature dies, you may pay X. If you do, return another target Zombie creature card with mana value X from your graveyard to the battlefield.

Flying Whenever another Spirit you control enters, you gain 2 life. 3W: Create a 1/1 white Spirit creature token with flying.

Trample Delirium — At the beginning of your upkeep, if there are four or more card types among cards in your graveyard, put three +1/+1 counters on this creature.

As this land enters, you may reveal a Forest or Plains card from your hand. If you don't, this land enters tapped. T: Add G or W.

Whenever this creature attacks, you may pay 1R and discard a card. If you do, this creature deals damage to target creature or planeswalker equal to the discarded card's mana value.

Flying Whenever a source an opponent controls deals damage to you or a permanent you control, you may have this creature deal 1 damage to that source's controller.