Niv-Mizzet, the Firemind

As long as this creature is equipped, it has first strike and lifelink. (It deals combat damage before creatures without first strike. Damage dealt by it also causes you to gain that much life.)

Vigilance As long as Raksha Golden Cub is equipped, Cat creatures you control get +2/+2 and have double strike.

Whenever a creature you control with power 3 or greater enters, draw a card.

Destroy target creature. It can't be regenerated.

Flying When Bladewing enters, you may return target Dragon permanent card from your graveyard to the battlefield. BR: Dragon creatures get +1/+1 until end of turn.

Flying, haste Lieutenant — As long as you control your commander, this creature gets +2/+2 and has "Whenever this creature attacks, it deals 7 damage to target creature defending player controls."

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip 0

Scry 2, then draw two cards. You lose 2 life. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)