Budget Alternatives to Cathars' Crusade

Dueling Coach $0.06 3W · Human Monk When this creature enters, put a +1/+1 counter on target creature. Invasion of Moag // Bloomwielder Dryads $0.08 Siege // Creature — Dryad When this Siege enters, put a +1/+1 counter on each creature you control. Keensight Mentor $0.11 2W · Human Cleric When this creature enters, put a vigilance counter on target non-Human creature you control. Atmospheric Greenhouse $0.11 4G · Spacecraft When this Spacecraft enters, put a +1/+1 counter on each creature you control. Durable Handicraft $0.13 1G · Enchantment Whenever a creature you control enters, you may pay {1}. Patron of the Valiant $0.13 3WW · Angel Flying Celebrity Fencer $0.14 3W · Elf Druid Alliance — Whenever another creature you control enters, put a +1/+1 counter on this creature. Overseer of Vault 76 $0.26 2W · Human Advisor First Contact — Whenever Overseer of Vault 76 or another creature you control with power 3 or les... Abzan Ascendancy $0.26 WBG · Enchantment When this enchantment enters, put a +1/+1 counter on each creature you control. Twisted Spider-Clone $0.26 3G · Spider Human When this creature enters, put a +1/+1 counter on each creature you control with a +1/+1 counter ... Southern Air Temple $0.31 3W · Shrine When Southern Air Temple enters, put X +1/+1 counters on each creature you control, where X is th... Kellan Joins Up $0.32 GWU · Legendary Enchantment When Kellan Joins Up enters, you may exile a nonland card with mana value 3 or less from your hand. The Flesh Is Weak $0.39 2WUB · Enchantment When this enchantment enters, put a +1/+1 counter on each creature you control. Oath of Ajani $0.51 GW · Legendary Enchantment When Oath of Ajani enters, put a +1/+1 counter on each creature you control. Felidar Retreat $1.59 3W · Enchantment Landfall — Whenever a land you control enters, choose one —