Well, it was shorthand for "you take 3 [damage]"
Untap, upkeep, Draw - reveal Entreat the Angels and cast it for it's miracle cost for x = 3
Attack Lord Windgrace with the manifested card and Yennet, triggering Yennet and revealing Esper Charm, casting it without paying its mana cost and causing you to discard two cards
Responses/blocks/take it?
Spidey: 23
Hand: 3
Library: 83
Command Zone: WUB
Aminatou, the Fateshifter(3; +1: Draw a card, then put a card from my hand on top of my library; -1: Exile another target permanent I own, then return it to the battlefield under my control.; -6: Choose left or right. Each player gains control of all nonland permanents other than ~ controlled by the next player in the chosen direction.; ~ can be my commander)
Battlefield:
(T) Plains
(T) Command Tower (T: Add one mana of any color in my commander's color identity [W, U, or B] to my mana pool)
(T) Sejiri Refuge (~ ETB tapped.; When ~ ETB, I gain 1 life.; T: Add W or U to my mana pool)
(T) Forsaken Sanctuary (~ ETB tapped.; T: Add W or B to my mana pool)
(T) Isolated Watchtower (T: Add C to my mana pool.; 2, T: Scry 1, then I may reveal the top card of my library. If a basic land card is revealed this way, put it onto the battlefield tapped. Activate this ability only if Mooseman controls at least two more lands than me)
Lightform (When ~ ETB, it becomes an Aura with enchant creature.; Manifest the top card of my library and attach ~ to it.; Enchanted creature has flying and lifelink)
(U)
Pilgrim's Eye (1/1; Flying; When ~ ETB, I may search my library for a basic land card, reveal it, put it into my hand, then shuffle my library)
(T,A) Manifested Card from library (2/2;
Flying, lifelink from Lightform) *Enchanted with Lightform*
(T,A)
Yennet, Cryptic Sovereign (3/5; Flying, vigilance, menace; Whenever ~ attacks, reveal the top card of my library. If that card's converted mana cost is odd, I may cast it without paying its mana cost. Otherwise, draw a card)
(S)
Angel creature token (4/4; Flying)
(S)
Angel creature token (4/4; Flying)
(S)
Angel creature token (4/4; Flying)
Graveyard: Brainstorm, Sol Ring, Esper Charm
Exile:
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Mooseman: 16
Hand: 6 - 4
Library: 85
Command Zone: 2BRG
Battlefield:
(U) Swamp
(T) Mountain
(T) Forest
(T) Tranquil Thicket (, L, ETB Tapped. T:G. Cycling:G)
Lord Windgrace (, 7, `+2;Discard a card then draw a card. If a land is discards, draw an additional card. -3:Retrun upto 2 target land cards in your GY to the battlefield. -11: Destroy 6 target non-land permanents, then create 6 2/2 green cat warrior creature token with forestwalk.)
(U)
Loyal Apprentice (Human, 2/1, Haste. Lieutenant: At the beginning of combat on your turn, if you control your commander, create an 1/1 Colorless Thropter artifact creature token with flying.That token gains haste until end of turn.)
(U)
Thropter Token (1/1 Flying. Haste)
Graveyard: Jund Panorama, Putrefy, Warped Landscape, two cards from hand
Exile: