Arcade is designed for programming games so there's lots of helpful blocks that we can use.
To set the number of lives you have at the start of the game, add the set life to 3 block.
let sleigh = sprites.create(img`
.......ffffffffff...............
....ffff22222222f...............
....f11122222222ff..............
....f111ffff22222ff.............
....f111f..f11111111............
....fffff..f11111111............
...........fffd8d8dff...........
.............fddddddff..........
............ffdf11111f..........
............f11fff111ff.........
............f111111111f.........
............ff11111111f.........
...........ff221111111f.........
...........f2222111111f.........
..........ff222221111ff.........
..........f2222222222f..........
..........f22222252222f.........
..........f22222222222f.........
....ffffffffffffff55ffffffffffff
....f24444444444444444444442222f
....f42222222222222222222222222f
....f42222222222222222222222222f
....f4222222222222222222222222ff
....f422222222222222222222222ff.
....f422222222222222222222222f..
....f2222222222222222222222fff..
....ffffffffefffffffffefffff....
............e.........e.......5.
...........ee.........ee......5.
..........ee...........ee.....5.
.........ee.............ee....5.
.....55555555555555555555555555.
`, SpriteKind.Player)
controller.moveSprite(sleigh, 150, 150)
sleigh.setStayInScreen(true)
info.setLife(3)