Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Slither Blade

Triton Shorestalker

Mist-Syndicate Naga

Ninjutsu {2}{U} ({2}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever this creature deals combat damage to a player, create a token that's a copy of this creature.

Changeling Outcast

Changeling (This card is every creature type.)
This creature can't block and can't be blocked.