Flash When Spring-Loaded Sawblades enters the battlefield, it deals 5 damage to target tapped creature an opponent controls. Craft with artifact {3}{W}
Chroma — When Springjack Shepherd enters the battlefield, create a 0/1 white Goat creature token for each white mana symbol in the mana costs of permanents you control.
"Better for a doun to lose its cenn than its springjacks."
When Squad Commander enters the battlefield, create a 1/1 white Kor Warrior creature token for each creature in your party. At the beginning of combat on your turn, if you have a full party, creatures you control get +1/+0 and gain indestructible until end of turn.
Flying When Squadron Hawk enters the battlefield, you may search your library for up to three cards named Squadron Hawk, reveal them, put them into your hand, then shuffle.
"The scouts claim the cold has malice, and a mind. I begin to believe them. Impassable drifts seem to appear before us at every turn." —Aevar Borg, northern guide, journal entry
Enchant creature Enchanted creature gets +1/+1 and has lifelink. When Squire's Devotion enters the battlefield, create a 1/1 white Vampire creature token with lifelink.
When Stack of Paperwork enters the battlefield, draw a card. Combat damage uses the stack. (Combat damage assignment can be responded to before damage is dealt.)
When Staff of the Storyteller enters the battlefield, create a 1/1 white Spirit creature token with flying. Whenever you create one or more creature tokens, put a story counter on Staff of the Storyteller. {W}, {T}, Remove a story counter from Staff of the Storyteller: Draw a card.
When Stalking Leonin enters the battlefield, secretly choose an opponent. Reveal the player you chose: Exile target creature that's attacking you if it's controlled by the chosen player. Activate only once.
Vigilance Coven — At the beginning of combat on your turn, if you control three or more creatures with different powers, creatures you control gain indestructible until end of turn.
When Stalwarts of Osgiliath enters the battlefield, the Ring tempts you. Whenever you draw your second card each turn, put a +1/+1 counter on Stalwarts of Osgiliath.
"The Enemy must pay dearly for the crossing of the River." —Denethor