Budget Alternatives to Linvala, Keeper of Silence

Intrusive Packbeast $0.02 4W · Beast Vigilance Hazardous Blast $0.10 3R · Sorcery Hazardous Blast deals 1 damage to each creature your opponents control. Karlov Watchdog $0.10 3W · Dog Vigilance Azorius Justiciar $0.11 2WW · Human Wizard When this creature enters, detain up to two target creatures your opponents control. Cosmotronic Wave $0.13 3R · Sorcery Cosmotronic Wave deals 1 damage to each creature your opponents control. Sharkey, Tyrant of the Shire $0.22 2UB · Avatar Rogue Activated abilities of lands your opponents control can't be activated unless they're mana abilit... Subjugator Angel $0.22 4WW · Angel Flying Bond of Discipline $0.23 4W · Sorcery Tap all creatures your opponents control. Blightbeetle $0.42 1B · Insect Protection from green Spider-Woman, Stunning Savior $0.67 1W/U · Spider Human Hero Flying Nowhere to Run $0.83 1B · Enchantment Flash Archetype of Courage $1.19 1WW · Human Soldier Creatures you control have first strike.