Having access to cards that can remove Necro such as Nevinyrral's Disk with it is nice so you can recommence drawing when your life total is getting low or just after a complete hand refill in the mid to late game
Between Powder Heal , Potions, healing attacks, and Erika, Grass can become nigh-unstoppable, healing from anything and everything, especially if you pair it with Grass best attackers like Venasaur EX and Exeggutor EX
Card Name Two-Headed Giant Mana Cost Type Creature Giant Warrior Rarity Rare rules Text Whenever this creature attacks, flip two coins
The D) scenario where your opponent is in such a bind that they absolutely have to block a creature enchanted by Pretenders Claim, and that block causes them to tap all their mana and lose the game for some reason
Mew and Mewtwo
Summary Lost Caverns of Ixalan set features unique valuable cards widely used in many formats