fiddling.js

// http://ramdajs.com/docs/#pipe
const { pipe, curry } = require('ramda')

const addToTop = curry((card, deck) => [card, ...deck])

const addToBottom = curry((card, deck) => [...deck, card])

const addBoth = pipe(
  addToTop({ name: 'Ice Wall', damage: 3, cost: 1 }),
  addToBottom({ name: 'Earth Strike', damage: 6, cost: 3 })
)

const newDeck = addBoth(deck)