Budget Alternatives to Walking Ballista

Icatian Javelineers $0.08 W · Human Soldier This creature enters with a javelin counter on it. Clockwork Hydra $0.09 5 · Hydra This creature enters with four +1/+1 counters on it. Monoskelion $0.10 2 · Construct This creature enters with a +1/+1 counter on it. Magma Pummeler $0.12 XRR · Elemental This creature enters with X +1/+1 counters on it. Chamber Sentry $0.14 X · Construct This creature enters with a +1/+1 counter on it for each color of mana spent to cast it. Cruel Sadist $0.15 B · Human Assassin {B}, {T}, Pay 1 life: Put a +1/+1 counter on this creature. Conductor of Cacophony $0.16 3B · Demon This creature enters with two +1/+1 counters on it. Spike Soldier $0.16 2GG · Spike Soldier This creature enters with three +1/+1 counters on it. Pentavus $0.21 7 · Construct This creature enters with five +1/+1 counters on it. Spike Rogue $0.21 1GG · Spike This creature enters with two +1/+1 counters on it. Phantom Nishoba $0.28 5GW · Cat Beast Spirit Trample Crystalline Crawler $0.35 4 · Construct Converge — This creature enters with a +1/+1 counter on it for each color of mana spent to cast it. Phantom Nantuko $0.37 2G · Insect Spirit Trample Triskelion $0.40 6 · Construct This creature enters with three +1/+1 counters on it. Hexavus $0.41 6 · Construct Flying Triskelavus $0.43 7 · Construct Flying Molten Hydra $0.47 1R · Hydra {1}{R}{R}: Put a +1/+1 counter on this creature. Deathbringer Thoctar $0.56 4BR · Zombie Beast Whenever another creature dies, you may put a +1/+1 counter on this creature. Apocalypse Hydra $0.68 XRG · Hydra This creature enters with X +1/+1 counters on it.