Flying, trample
, Sacrifice another creature: Target player mills three cards.
Pay 1 life: Add . Spend this mana only to cast a spell from your graveyard.

This creature can't be blocked.
Whenever this creature deals combat damage to a player, choose one that hasn't been chosen —
• Put two +1/+1 counters on this creature.
• Draw a card.
• This creature becomes a copy of another target creature you control.

: Add .
, , Sacrifice this land: Destroy target nonbasic land. Activate only if an opponent controls four or more lands.

+1: Choose up to two target creatures. Until your next turn, whenever either of those creatures deals combat damage, you draw a card.
−2: Tap up to two target nonland permanents. They don't untap during their controller's next untap step.
−7: Draw three cards. You get an emblem with "You may cast spells from your hand without paying their mana costs."

(: Add .)

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Other Rats you control have toxic 1.
When Karumonix enters, look at the top five cards of your library. You may reveal any number of Rat cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in a random order.

Flying
Activated abilities of artifacts, creatures, and planeswalkers can't be activated.

(: Add .)

Haste
Whenever Thraximundar attacks, defending player sacrifices a creature of their choice.
Whenever a player sacrifices a creature, you may put a +1/+1 counter on Thraximundar.

Equipped creature gets +3/+0 and has intimidate. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Whenever equipped creature attacks, until the end of defending player's next turn, that player gets two rad counters whenever they cast a spell.
Equip

Titan's Revenge deals X damage to any target. Clash with an opponent. If you win, return Titan's Revenge to its owner's hand. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)

During your turn, Radha has first strike.
You may look at the top card of your library any time, and you may play lands from the top of your library.
: Radha gets +X/+X until end of turn, where X is the number of lands you control.

Menace
Whenever Splinter or another nontoken creature you control leaves the battlefield, create a Mutagen token.
Partner—Character select (You can have two commanders if both have this ability.)

Sacrifice a creature: The next time a source of your choice would deal damage to any target this turn, prevent that damage.

Creatures you control get +1/+1 until end of turn.

This land enters tapped.
: Add .

All nonsnow creatures get -X/-X until end of turn, where X is the number of snow permanents you control.

When this creature enters, you may search your library for a Dinosaur card, reveal it, then shuffle and put that card on top.
Whenever a Dinosaur you control enters, you may have this creature deal 1 damage to each creature.

Untap all nonland permanents you control.

Create a token that's a copy of target non-Frog creature, except it's a 1/1 green Frog.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)