Put a shield counter on target creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)
Scry 1.

As an additional cost to cast this spell, you may reveal a Dragon card from your hand or choose a Dragon you control.
Dragon's Fire deals 3 damage to target creature or planeswalker. If you revealed a Dragon card or chose a Dragon as you cast this spell, Dragon's Fire deals damage equal to the power of that card or creature instead.

First strike
Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)
Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Flying
When this creature enters, draw cards equal to the number of opponents you have.
: Create a 1/1 colorless Thopter artifact creature token with flying.

Target player loses 2 life and you gain 2 life. Create two Blood tokens. (They're artifacts with ", , Discard a card, Sacrifice this token: Draw a card.")

Destroy target nonlegendary creature.

: Add .
Threshold — This creature gets +3/+3 as long as there are seven or more cards in your graveyard.

This land enters tapped.
: Add .
, , Sacrifice this land: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

Warleader's Helix deals 4 damage to any target and you gain 4 life.

Reach
Tap an untapped Spider you control: Search your graveyard and/or library for a card named Arachnus Web and put it onto the battlefield attached to target creature. If you search your library this way, shuffle.

, Sacrifice two lands and this artifact: Destroy target attacking creature.

: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)
Swampcycling (, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)

, Sacrifice this creature: Add .

Haste
If a spell you control would deal damage to an opponent, prevent that damage. Create a 3/1 red Elemental Shaman creature token with haste for each 1 damage prevented this way.
When Hostility is put into a graveyard from anywhere, shuffle it into its owner's library.

(: Add .)

Flying

Whenever an opponent is dealt noncombat damage, creatures you control get +1/+0 until end of turn.

(: Add .)

Vigilance
Whenever this creature deals combat damage to a player, return target artifact or enchantment card from your graveyard to the battlefield.