Sacrifice three white creatures: Exile target creature.
Whenever another black creature you control dies, create a 1/1 white Spirit creature token with flying.

Deathtouch
At the beginning of your end step, investigate for each opponent who lost life this turn.
Whenever a Clue you control is put into a graveyard from the battlefield, create a 1/1 white and black Spirit creature token with flying. This ability triggers only once each turn.

Starting intensity 0
When Teysa enters, create a 1/1 white and black Spirit creature token with flying. Teysa intensifies by 1.
Spirits you control get +X/+0, where X is Teysa's intensity. At the beginning of your end step, you may exile Teysa. If you do, at the beginning of your next upkeep, return Teysa to the battlefield under its owner's control and it gains haste.

If a creature dying causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Creature tokens you control have vigilance and lifelink.

Vigilance, protection from creatures
Whenever a creature deals combat damage to you, destroy that creature. Create a 1/1 white and black Spirit creature token with flying.

When this creature enters, put a +1/+1 counter on target creature you control.

Flash
When Teyo enters, target permanent you control gains hexproof until end of turn. Put a +1/+1 counter on it if it's a creature. Put a loyalty counter on it if it's a planeswalker.

Flash
When Teyo enters, target permanent you control gains deathtouch until end of turn. Put a +1/+1 counter on it if it's a creature. Put a loyalty counter on it if it's a planeswalker.

Increment
When this creature enters, surveil 2.

Whenever one or more cards leave your graveyard, choose one that hasn't been chosen this turn —
• Draw a card.
• Create a Treasure token.
• Create a 2/2 black Zombie Druid creature token.

Flying
Whenever Teval attacks, mill three cards. Then you may return a land card from your graveyard to the battlefield tapped.
Whenever one or more cards leave your graveyard, create a 2/2 black Zombie Druid creature token.

Flying, lifelink
Spells you cast have delve.
Whenever you cast a spell, you lose life equal to its mana value.

Whenever Tetzin or another double-faced artifact you control enters, mill three cards. You may put an artifact card from among them into your hand.
Craft with six artifacts (, Exile this artifact, Exile the six from among other permanents you control and/or cards from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

Deathtouch
, Reveal this card from your hand: Put a prey counter on target creature. Activate only during your turn.
When Tetzimoc enters, destroy each creature your opponents control with a prey counter on it.

Tetsuo Umezawa can't be the target of Aura spells.
, : Destroy target tapped or blocking creature.

Whenever Tetsuo attacks, if it's equipped, choose one —
• Tetsuo deals damage equal to the greatest mana value among Equipment attached to it to any target.
• You may cast an instant or sorcery spell from your hand with mana value less than or equal to the greatest mana value among Equipment attached to Tetsuo without paying its mana cost.

Double strike
Prowess
Whenever a creature an opponent controls with power or toughness 1 or less blocks, Tetsuko Umezawa deals 1 damage to that creature's controller.