Mono White Aggro by Khat VS Selesnya Aggro by JDub0 - 1

At the beginning of combat on your turn, if you control three or more creatures, this creature gets +1/+1 until end of turn and you gain 1 life.

When this creature enters, draw a card.

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

Whenever another creature you control enters, put a +1/+1 counter on this creature. As long as this creature has three or more +1/+1 counters on it, it has flying and is a Knight in addition to its other types.

Other Cats you control get +1/+1. Whenever Arahbo or another nontoken Cat you control enters, create a 1/1 white Cat creature token.

When this creature enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") Whenever you gain life for the first time during each of your turns, create a 1/1 white Cat creature token.

Other Cats you control get +1/+1 and have lifelink. (Damage dealt by those creatures also causes you to gain that much life.) When this creature enters, create two 1/1 white Cat creature tokens with lifelink.

As this artifact enters, choose a creature type. Creatures you control of the chosen type get +1/+1. {T}: Add one mana of any color.

As this artifact enters, choose a creature type. This artifact enters with a fellowship counter on it for each creature you control of the chosen type. Creatures you control of the chosen type get +1/+1 for each fellowship counter on this artifact.

This spell costs {1} less to cast for each Cat you control. Creatures you control get +2/+2 until end of turn.

Exile target artifact, enchantment, or creature with power 4 or greater.

Tap all creatures your opponents control. Creatures you control gain lifelink until end of turn.

({T}: Add {W}.)