There are exceptions to this, but most decks will fit into one of these two types
Another thing that makes Secret Lairs a hot property is they often hold valuable reprints for rare MTG cards, which are otherwise difficult or costly to get hold of
Ancient Silver Dragon Archive Dragon Astral Dragon Belltoll Dragon Blue Dragon Cloud Dragon Day of the Dragons Dirgur Island Dragon Dirgur Island Dragon Dragon Turtle Dragon Wings Dragon's Eye Savants Dragonborn Looter Dragonlord's Prerogative Dragonologist Dragonstorm Forecaster Juvenile Mist Dragon Kitsune, Dragon's Daughter Lapis Orb of Dragonkind Mindscour Dragon Mist Dragon Oceanus Dragon Phantasmal Dragon Pseudodragon Familiar Quicksilver Dragon Roiling Dragonstorm Sapphire Dragon Sapphire Dragon Shimmer Dragon Transcendent Dragon Young Blue Dragon Young Blue Dragon
Red has a knack for generating creatures with a short lifespan that sacrifice themselves truly a match made in sacrificial heaven
Grixis Midrange -- Magic 2019 Standard | TEMPO, (5-0) MTGO Creatures (13) 2 Glint-Sleeve Siphoner 2 Torrential Gearhulk 2 The Scarab God 3 Champion of Wits 4 Nicol Bolas, the Ravager Planeswalkers (1) 1 Liliana, Death's Majesty Instants (18) 1 Commit // Memory 1 Supreme Will 2 Essence Scatter 3 Abrade 3 Magma Spray 4 Harnessed Lightning 4 Vraska's Contempt Sorceries (1) 1 Doomfall Enchantments (1) 1 Arguel's Blood Fast Lands (26) 1 Island 1 Mountain 2 Swamp 1 Field of Ruin 3 Dragonskull Summit 3 Drowned Catacomb 3 Spirebluff Canal 4 Aether Hub 4 Canyon Slough 4 Fetid Pools Sideboard (15) 2 Glint-Sleeve Siphoner 1 Abrade 1 Jace's Defeat 2 Chandra's Defeat 2 Negate 1 Doomfall 1 Cut // Ribbons 1 Hour of Devastation 1 Sweltering Suns 2 Duress 1 Arguel's Blood Fast Nicol Bolas, the Ravager
If the resulting creature attacks, the defending player must assign at least one blocker to it during the declare blockers step if that player controls any creatures that could block it