In particular youll want to remember the letter Z will let you undo an action, which is particularly helpful if youre adding mana to your mana pool but decide you dont want to do that yet

Blackcleave Goblin Blight Mamba Blighted Agent Blightsteel Colossus Blightwidow Burn the Impure Carrion Call Chained Throatseeker Contagious Nim Core Prowler Corpse Cur Corrupted Conscience Cystbearer Fallen Ferromancer Flensermite Flesh-Eater Imp Glistener Elf Glistening Oil Grafted Exoskeleton Hand of the Praetors Happy Dead Squirrel Ichor Rats Ichorclaw Myr Inkmoth Nexus Lost Leonin Melira, Sylvok Outcast Mindcrank Necropede Ogre Menial Pestilent Souleater Phyresis Phyrexian Crusader Phyrexian Digester Phyrexian Hydra Phyrexian Juggernaut Phyrexian Swarmlord Phyrexian Unlife Phyrexian Vatmother Plague Myr Plague Stinger Priests of Norn Putrefax Razor Swine Reaper of Sheoldred Rot Wolf Scourge Servant Septic Rats Shriek Raptor Skithiryx, the Blight Dragon Skithiryx, the Blight Dragon Spinebiter Tainted Strike Tangle Angler Tel-Jilad Fallen Tine Shrike Toxic Nim Trigon of Infestation Triumph of the Hordes Vector Asp Viral Drake Viridian Betrayers Viridian Corrupter Whispering Specter

Though technically useless with zero creatures in play, it becomes a forest with just one and quickly becomes egregious
Counter your generous gift pointed at Eligeth and draw 3 cards
If those characters get more damage tokens than their Willpower score (read: health points), they're discarded for the rest of the game
Amass is a mechanic that was originally linked to zombie creature tokens