As you know from other popular games, like Magic: The Gathering and Pokmon, you collect cards from booster packs and create decks to play from them
Flying is one thing, but vigilance is even better
Swords to Plowshares is a clean, cheap answer that kills almost any creature in Constructed formats and its played as a four-of in both aggressive and control decks alike
Since there are tons of different sets that can be combined, you should be able to respond to different broken plays from different sets if you want to win
Enchantment - Aura In Too Deep Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Enchant creature, planeswalker, or Clue Enchanted permanent is a colorless Clue artifact with ", Sacrifice this artifact: Draw a card" and loses all other abilities
The second ability of Elenda's Hierophant triggers just once for each life-gaining event, no matter how much life was gained