can you have more than 60 cards in mtg How to Play Magic: The Gathering (For Beginners) Building A 60 Card Magic

Trading a mana rock for a Gilded Lotus to ramp and fix (which was neat, and I did see on hell of a turn 3 play of 'tap Mindstone and 2 lands for Tinker, get Gilded Lotus, land, Wrath') and a turn 3 Staff of Nin is a neat trick for a control deck, but I am not sure it is worth both the deck building contortions and often the card investment for these outcomes

1) Do I have to scream at the end of every turn or just my turn

Yes, they might sometimes come into play tapped or not turn on your Kird Ape but this is a minor inconvenience compared to having a bounce land bounced or having only filter lands and colourless lands

Four mana, destroy all creatures, no scaling, life payment, or negotiation