Budget Alternatives to Lifeline

Hikari, Twilight Guardian $0.09 3WW · Spirit Flying Blizzard Strix $0.10 4U · Bird Flash Skyskipper Duo $0.12 4U · Bird Frog Flying Sentinel of the Pearl Trident $0.13 4U · Merfolk Soldier Flash Glimmerpoint Stag $0.14 2WW · Elk Vigilance Saltskitter $0.17 3W · Wurm Whenever another creature enters, exile this creature. Molten Firebird $0.18 4R · Phoenix Flying Voyager Staff $0.22 1 · Artifact {2}, Sacrifice this artifact: Exile target creature. Voidwalk $0.23 3U · Sorcery Exile target creature. Identity Thief $0.24 2UU · Shapeshifter Whenever this creature attacks, you may exile another target nontoken creature. Galepowder Mage $0.24 3W · Kithkin Wizard Flying Niko, Light of Hope $0.33 2WU · Human Wizard When Niko enters, create two Shard tokens. Roon of the Hidden Realm $0.34 2GWU · Rhino Soldier Vigilance, trample Kykar, Zephyr Awakener $0.41 2WU · Bird Wizard Flying Angel of Condemnation $0.50 2WW · Angel Flying, vigilance Oath of Teferi $0.79 3WU · Legendary Enchantment When Oath of Teferi enters, exile another target permanent you control.