Kastral triggers whenever combat damage is done to a player
Mentor of the Meek may not be the single greatest form of card advantage but its a really solid way to fix your hand if youre playing a deck with enough low-stats creatures
Technically, there are no sideboards in EDH, so cards that use them don't work
Having to use your mana on the turn where you want to play what you tutored for, gives more information to your opponents
Shock Lands Shock lands are a great way to pay life passively
Grixis Dragons | Guilds Standard | Rudy Briksza Creatures (9) 2 Niv-Mizzet, Parun 3 Thief of Sanity 4 Nicol Bolas, the Ravager Planeswalkers (3) 3 Sarkhan, Fireblood Instants (10) 1 Expansion // Explosion 1 Moment of Craving 2 Shivan Fire 2 Spell Pierce 2 Syncopate 2 Vraska's Contempt Sorceries (12) 1 Notion Rain 2 Discovery // Dispersal 2 Ritual of Soot 3 Lava Coil 4 Thought Erasure Enchantments (1) 1 The Eldest Reborn Lands (25) 1 Swamp 2 Island 2 Mountain 4 Dragonskull Summit 4 Drowned Catacomb 4 Steam Vents 4 Sulfur Falls 4 Watery Grave Nicol Bolas, the Ravager is a powerful threat on its own and can easily just win games