Removing blockers is really good for this deck, and if you dont have Dolmen Gate in play, then look to cards like Hammers of Moradin that can tap down a bunch of creatures every combat while dropping in two 3/3s at each opponent it didnt attack
As a rule of thumb, every card that sees play in Old School has a higher price than you might think , because people like their cheap black borders
Pongify + Rapid Hybridization Pongify and Generous Gift are blue's version of Generous Gift and Beast Within: Destroying something and gifting a 3/3 to your opponent
This The Lord of the Rings: Tales of Middle-earth Commander Deck set includes 4 (1 of each) ready-to-play deck of 100 Magic cards (2 Traditional Foil Legendary Creature cards, 98 non foil cards), a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or non foil special treatment card of rarity Rare or higher and 1 Traditional Foil special treatment Common or Uncommon card), 1 foil-etched Display Commander (a thick cardstock copy of the commander card with foil etched into the cards border and art), 10 double-sided tokens, 1 Helper card, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card

Aberrant Acolyte Hybrid Atalan Jackal Biophagus Broodlord Clamavus Deathleaper, Terror Weapon Exocrine Gargoyle Flock Genestealer Locus Genestealer Patriarch Ghyrson Starn, Kelermorph Haruspex Hierophant Bio-Titan Hormagaunt Horde Lictor Magus Lucea Kane Malanthrope Mawloc Nexos Old One Eye Purestrain Genestealer Ravener Screamer-Killer Sporocyst Termagant Swarm Tervigon The Red Terror The Swarmlord Toxicrene Trygon Prime Tyranid Harridan Tyranid Prime Tyrant Guard Venomthrope Winged Hive Tyrant Zoanthrope