Avenger of Zendikar creates 0/1 Plant tokens for each land you control, and can power them up with further land drops
It asks you to pay three mana to make an opponent the monarch, then flips the next turn when you actually get the monarch back, now that the whole rest of the table has probably drawn an extra card from it
the rule on the human side was that the card transformed at the start of your turn if no spells were played during the last turn
When Felidar Guardian enters the battlefield, you may exile another target permanent you control, then return that card to the battlefield under its owner's control
A 2/1 with menace can provide a decent clock and it can provide card advantage if youre actively bringing cards back to your hand from the graveyard
Flickering another creature with its effect is a good repeatable ability at 3 mana, and the fact that it can hit any creature is even better