mtg colorless card draw Coercive Portal [Conspiracy] Good sources of card draw

Additionally, for those looking to find rules in a fully interactive environment, let me suggest you check out both the Rules FAQ section and the Rules Q&A section of our forums

After that, investigate became what Wizards calls a deciduous mechanic

The cause of this is because 1) Slivers are incredibly popular 2) we haven't had Slivers in a main set for a decade and reprints are few and far between, so supply is low 3) Sliver Swarm did a bad job reprinting Sliver staples

2 Atraxa, Grand Unifier Bring Them All Together Atraxa is a bit more of a wildcard than an exclusive lifelink card, but it just does so much work that it is hard to ignore