Creature and enchantment spells you control can't be countered. {3}{G}: Target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is the number of enchantments you control. It's still a land.
Flash Enchant creature Enchanted creature gets +3/+3. Enchanted creature's controller may have it assign its combat damage as though it weren't blocked.
Enchant creature When this Aura enters, draw a card. Enchanted creature loses all abilities and is a green Elk creature with base power and toughness 3/3.
Draw cards equal to the greatest power among creatures you control. You may cast a spell with mana value 5 or less from your hand without paying its mana cost.
"Control the Great Conduit? You might as well try to divert a river with your hands."
Enchant Forest As this Aura enters, choose a color. Whenever enchanted Forest is tapped for mana, its controller adds an additional one mana of the chosen color.
Enchant creature you control When this Aura enters, enchanted creature fights up to one target creature you don't control. Enchanted creature gets +0/+2.
Flying When this creature enters, you may pay {X}. When you do, you may cast target instant or sorcery card with mana value X from a graveyard without paying its mana cost. If that spell would be put into a graveyard, exile it instead.
Flash Flying Whenever you cast your first spell during each opponent's turn, look at the top two cards of your library. Put one of those cards into your hand and the other into your graveyard.
Flying {X}{U/B}: Choose a color. Target opponent exiles the top X cards of their library. For each card of the chosen color exiled this way, create a 1/1 blue and black Faerie Rogue creature token with flying.
Enchant creature Enchanted creature has flying. Whenever enchanted creature deals combat damage to a player, create that many 1/1 green Saproling creature tokens.
When Siona enters, look at the top seven cards of your library. You may reveal an Aura card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. Whenever an Aura you control becomes attached to a creature you control, create a 1/1 white Human Soldier creature token.