T: Add C. 4, T: Proliferate (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Flash Flying When Ice-Fang Coatl enters the battlefield, draw a card. Ice-Fang Coatl has deathtouch as long as you control at least three other snow permanents.
Add RRR to your mana pool. Splice onto Arcane 1R (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)
Create a 0/0 green Ooze creature token with trample. Put X +1/+1 counters on it, where X is two plus the total number of cards you own in exile and in your graveyard that are Oozes or are named Slime Against Humanity. A deck can have any number of cards named Slime Against Humanity.
Trample Cumulative upkeep—Put a +1/+1 counter on a creature an opponent controls. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
First strike T: Brigid, Hero of Kinsbaile deals 2 damage to each attacking or blocking creature target player controls.
At the beginning of your upkeep, Honden of Infinite Rage deals damage to target creature or player equal to the number of Shrines you control.
Bushido 2 (When this blocks or becomes blocked, it gets +2/+2 until end of turn.) 2R, Sacrifice a Samurai: Samurai you control gain double strike until end of turn.
Destroy all creatures you don't control and all planeswalkers you don't control.
Vigilance, lifelink At the beginning of your upkeep, if you have 40 or more life, you win the game.
Other Cats you control get +1/+1 and have lifelink. When Regal Caracal enters then battlefield, create two 1/1 white Cat creature tokens with lifelink.
Pride Sovereign gets +1/+1 for each other Cat you control. W, T, Exert Pride Sovereign: Create two 1/1 white Cat creature tokens with lifelink. (An exerted creature won't untap during your next untap step.)
Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile all cards from target player's graveyard. T: Add B.
Other Dinosaurs you control have haste. When Regisaur Alpha enters the battlefield, create a 3/3 green Dinosaur creature token with trample.