I play a competitive best-of-one game.
I play Selesnya Creatures, my opponent plays Selesnya Tokens.
I do good trades, jam the board, and, due to a lot of value in my deck, eventually get myself a superior boardstate, and get my opponent to 12 life. At this point, I cast the "Flourish" part of
Flower // Flourish. I think about who will I attack with.
My opponent says "good game".
I attack with everything.
Opponent plays
Settle the Wreckage.
Then, still in my turn,
March of the Multitudes with all his creatures.
Then, on his turn, the "Flourish" part of
Flower // Flourish.
Good game.
Selesnya tokens
I just did something similar. I had another slow draw (first play turn 4 Ajani on empty board ... lol). Opponent had Doom Whisperer out while I didn't draw a Conclave Tribunal, making it hard to attack. I had Legion's Landing out but couldn't flip it, and had nothing to do while my opponent developed his board. I couldn't even attack with History of Benalia's third chapter. I had Trostani, but opponent had Chupacabra. Opponent was so comfortable he used The Eldest Reborn's third chapter on my Ajani instead of Trostani and started buffing his Doom Whisperer. Then this happened:
Opponent's board: Doom Whisperer, Llanowar Elves, Chupacabra, Jadelight Ranger, Ajani, The Eldest Reborn @ 1st chapter, bunch of cards in hand
My board: 6 creatures 7 lands, Legion's Landing, two cards in hand
End of turn March of the Multitudes for 10 tokens, next turn Flourish. Opponent went from 14 life to -16 life in one attack.