In some matches, it doesn't matter at all, but in other matches (especially against control), it can be super important for pushing across the last few points of damage after a sweeper or a bunch of removal
Mega Absol exDark-type Mega with high-value Illustration Rare artwork beloved by collectors
Hence, a total of 54 cards, featuring 4 suits, is typically present in a card deck
Well, first of all, they go first

Sort Card Type Turtonator #17Rare $0.21 Turtonator #26Rare $0.23 Turtonator #27Uncommon $0.10 Turtonator #50Uncommon $0.25 Turtonator #29Rare $0.10 Turtonator #198Uncommon $0.16 Turtonator #35Common $0.07 Turtonator #137Uncommon $0.06 Turtonator #17Uncommon $0.07 Turtonator #17Uncommon $0.16 Turtonator #44Uncommon $0.05 Turtonator #49Uncommon $0.91 Turtonator #103None Turtonator #24Common $0.50 Turtonator #37Uncommon $0.79 Turtonator - 015/102 #15Common $0.06 Turtonator - 025/142 #25Common $0.09 Turtonator - 105/102 #105Art Rare $1.96 Turtonator - 146/142 #146Illustration Rare $4.88 Turtonator - 2019 (Kaya Lichtleitner) #50Uncommon $1.71 Turtonator - SM27 #SM27Promo $0.52 Turtonator (Mirror Holofoil) #103None $4.50 Turtonator GX #18Ultra Rare $2.14 Turtonator GX #SV52Shiny Holo Rare $8.00 Turtonator GX #212Shiny Secret Rare $10.00 Turtonator GX - 009/050 #9Double Rare $4.00 Turtonator GX - 051/050 #51Super Rare $7.49 Turtonator GX - 056/050 #56Hyper Rare Turtonator GX (Full Art) #131Ultra Rare $4.72 Turtonator GX (Secret) #148Secret Rare $10.30 Turtonator GX (Secret) #148Secret Rare $10.30 Turtonator GX #212Shiny Secret Rare $10.00 Turtonator GX #SV52Shiny Holo Rare $8.00 Turtonator GX - 051/050 #51Super Rare $7.49 Turtonator - 146/142 #146Illustration Rare $4.88 Turtonator GX (Full Art) #131Ultra Rare $4.72 Turtonator (Mirror Holofoil) #103None $4.50 Turtonator GX - 009/050 #9Double Rare $4.00 Turtonator GX #18Ultra Rare $2.14 Turtonator - 105/102 #105Art Rare $1.96

Luckily, there are a lot of different permanents that have the same function, so even if one gets removed, you can draw into a different one.