Double strike (This creature deals both first-strike and regular combat damage.)
Whenever "Siege Striker" attacks, you may tap any number of untapped creatures you control. "Siege Striker" gets +1/+1 until end of turn for each creature tapped this way.
When Aethersnipe enters the battlefield, return target nonland permanent to its owner's hand.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)
When Avenger of Zendikar enters the battlefield, create a 0/1 green Plant creature token for each land you control.
Landfall — Whenever a land enters the battlefield under your control, you may put a +1/+1 counter on each Plant creature you control.