Science Teacher — Each Saga spell you cast has replicate. The replicate cost is equal to its mana cost. (When you cast that Saga, copy it for each time you paid its replicate cost. Copies of Saga spells become tokens.)
Doctor's companion (You can have two commanders if the other is the Doctor.)

While voting, you may vote an additional time. (The votes can be for different choices or for the same choice.)

Equipped creature has double strike.
Whenever equipped creature deals combat damage, you may put an Aura card from your hand onto the battlefield attached to it.
Equip

Creature and enchantment spells you control can't be countered.
: Target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is the number of enchantments you control. It's still a land.

As an additional cost to cast this spell, sacrifice an artifact.
Return target artifact card from your graveyard to the battlefield.

As long as you've lost life this turn, this creature has flying and vigilance.
Whenever you gain life, put a +1/+1 counter on this creature.
When this creature dies, put its counters on target creature you control.

Choose up to five worth of modes. You may choose the same mode more than once.
— Create a tapped Treasure token.
— Exile the top two cards of your library. Until the end of your next turn, you may play them.
— Until the end of your next turn, whenever you cast a spell, Season of the Bold deals 2 damage to up to one target creature.

This spell costs less to cast if an opponent controls no basic lands.
Destroy target creature.

, : Copy target activated or triggered ability you control. You may choose new targets for the copy.
Ultimate Sacrifice — , Sacrifice Adric: Counter target activated or triggered ability.
Doctor's companion (You can have two commanders if the other is the Doctor.)

: Add one mana of any color that a land an opponent controls could produce.

Tempting offer — Return a creature card from your graveyard to the battlefield. Each opponent may return a creature card from their graveyard to the battlefield. For each opponent who does, return a creature card from your graveyard to the battlefield.

Whenever you draw your second card each turn, each opponent loses 2 life and you gain 2 life.
When this creature dies, return another target creature card with mana value 3 or less from your graveyard to the battlefield.

When Godo enters, you may search your library for an Equipment card, put it onto the battlefield, then shuffle.
Whenever Godo attacks for the first time each turn, untap it and all Samurai you control. After this phase, there is an additional combat phase.

Flying
Whenever you cast a spell, return target permanent to its owner's hand.

Each other player sacrifices a creature. You create a 2/2 black Zombie creature token for each creature sacrificed this way.

Create a token that's a copy of target creature you control.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Green creatures you control get +1/+1.
Whenever a green creature you control enters, scry 1.

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
: Add or .

Flying
Whenever you cast a spell from anywhere other than your hand, draw a card.

Whenever this creature deals combat damage to a player, that player reveals the top two cards of their library. You choose one of those cards and put it into their graveyard.