Return target creature card from your graveyard to your hand.Threshold — Return that card from your graveyard to the battlefield instead if seven or more cards are in your graveyard.
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and no matter when it came under your control.)Equip (: Attach to target creature you control. Equip only as a sorcery.)
Arixmethes, Slumbering Isle enters tapped with five slumber counters on it.As long as Arixmethes has a slumber counter on it, it's a land. (It's not a creature.)Whenever you cast a spell, you may remove a slumber counter from Arixmethes.: Add .
When Avenger of Zendikar enters, create a 0/1 green Plant creature token for each land you control.Landfall — Whenever a land you control enters, you may put a +1/+1 counter on each Plant creature you control.
+2: Untap each enchanted permanent you control.−1: Create a white Aura enchantment token named Mask attached to another target permanent. The token has enchant permanent and umbra armor.−7: Mill seven cards. Return all non-Aura enchantment cards from your graveyard to the battlefield, then do the same for Aura cards.Estrid, the Masked can be your commander.
Improvise (Each artifact you tap after you're done activating mana abilities pays for .)Reveal the top X cards of your library. You may put any number of artifact cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.
