If all else fails, you can always use Meticulous Excavation to bounce them back to your hand for a second try
At DCI-sanctioned events, judges will sometimes print out proxies when cards are accidentally damaged during play, like if water was spilled on the table or someone was shuffling a bit too aggressively

All Cards Showing 4345-4368 of 9,246 cards Page 182 of 386 Promo Ceruledge #035 M P Traditional Chinese Promos -- Promo Flygon #036 M P Traditional Chinese Promos -- Promo Budew #037 M P Traditional Chinese Promos -- Promo Air Balloon #038 M P Traditional Chinese Promos -- Promo Reshiram ex #039 M P Traditional Chinese Promos -- Promo Wally's Compassion #040 M P Traditional Chinese Promos -- Promo Zekrom ex #041 M P Traditional Chinese Promos -- Promo Charmeleon #042 M P Traditional Chinese Promos -- Promo Krookodile ex #043 M P Traditional Chinese Promos -- Promo Toxel #044 M P Traditional Chinese Promos -- Promo Dudunsparce #045 M P Traditional Chinese Promos -- Promo Struggle Policy #046 M P Traditional Chinese Promos -- Promo Air Balloon #047 M P Traditional Chinese Promos -- Promo Hilda #048 M P Traditional Chinese Promos -- Promo Mega Signal #049 M P Traditional Chinese Promos -- Promo Lillie's Determination #050 M P Traditional Chinese Promos -- Promo Chikorita #051 M P Traditional Chinese Promos -- Promo Tepig #052 M P Traditional Chinese Promos -- Promo Totodile #053 M P Traditional Chinese Promos -- Promo Pikachu #054 M P Traditional Chinese Promos -- Promo Meganium #055 M P Traditional Chinese Promos -- Promo Inteleon #056 M P Traditional Chinese Promos -- Promo Iono's Wattrel #057 M P Traditional Chinese Promos -- Promo Alakazam #058 M P Traditional Chinese Promos --

For each one of these types of cards in your build, you can consider docking down a creature from your deck where appropriate
In this case, Shivan Dragon gains +1/+0 for every mountain you spend on this ability per turn
I was impressed by how often cards I wanted in the deck were already included in the preconstructed version