What goes well with us? The spell is daunting because the options are virtually limitless. I figure in most cases we'll want a hard hitting infantry unit to flank an enemy or a defensively loaded infantry unit to stall something. A harassing light unit could work as could a conveniently niche filling character, but the real tempation would be artillery, and I think the winning race is dwarfs because they can get to the closest to 150 points without going over. I think the reasonable strategy is to pick one army of things you might want to summon and bring a couple. That's why I'm including Lizardmen because it should be pretty easy for us to have extra LM units. Here's the shortlists I came up with based on the armies I have models for or friends that could loan me suitable models. You can tell I have a lot of respect for the power of dwarfs because they beat me so often. I also think Slayers which are usually a subpar choice would be fantastic in a game laden with giant monsters. Lizardmen 75 point options Salamander or Razordon 10 Skink Skirmishers with blowpipes 6 Chameleon Skinks 15 Skinks Level One Skink Priest 150 point Options 5 Terradon Riders 2 Salamanders or Razordons 300 point Options 5 Kroxigors with Champion 25 Spear Saurus, 27 hand weapon saurus 27 Skink/3 Kroxigor 18 Temple Guard and Musician High Elf Options 75 point options Giant Eagle 150 point Options Lion Chariot Level 2 Mage on Elven Steed 300 point Options 20 Sword Masters 20 White Lions 25 Sea Guard Dark Elf Options 75 point options 6 Harpies 150 point Options 25 Dark Elf Warriors 15 Corsairs 15 Witch Elves 14 Crossbowmen + Musician and Champion Level one sorceress on Dark Pegasus 300 point Options 20 Black Guard with Full Command 30 Corsairs 25 Executioners 27 Witch Elves with Full Command Master on Manticore with lance, shield, heavy armor, dragon cloak Level 4 Supreme Sorceress on Cold One Orcs and Goblins Options 75 point options 2 Trolls Goblin Wolf Chariot with extra Wolf and Crewman 25 Night Goblins 6 Wolf Riders with spears and shields Level One Savage Orc Shaman 150 point Options 30 Goblins with spears and shields and full command 25 Night Goblins with 3 Fanatics 10 Spider Riders with bows and Standard Bearer 16 Big Un Orc Boys with additional hand weapons 300 point Options 6 River Trolls 8 Regular Trolls 12 Boar Riders with SB, spears, shields, big boy upgrade 12 Savage Orc Boar Riders with additional hand weapons Dwarfs 75 point options Dragon Slayer (to point at a monster) Runesmith (to boost dispel dice) Bolt Thrower and Engineer with hand gun and brace of pistols 150 point Options Runelord Demon Slayer 15 great weapon warriors/16 handweapon warriors and musician 13 quarrelers and musician/10 Thunderers and Champion 12 Hammerers and Musician Cannon or Grudge Thrower with Engineer with hand gun and brace of pistols 13 Slayers and Musician Organ Gun 11 Ironbreakers and Musician 300 point Options 11 Giant Slayers, 1 Troll Slayer or 27 Trolls Slayers 30 great weapon warriors 20 Ironbreakers and Full Command 25 Hammerers
Great list there. In my last SoM game my opponent summoned an Ogre Butcher in turn 5 to grab a Fulcrum in turn 6 as we were both running low on Wizards. In my last turn I summoned an Organ Gun and killed said Butcher. Ogre casters are great at the 150 points level, especially the Firebelly as you also get a Breath Weapon. You get T5 and 4W so they are great for holding Fulcrums if you're used to having Skinks up there!