And when you do, this 0/2 will become a 3/5 that taps for three mana instead of one, so it's a one-time investment
If you are interested, I have also written my initial review with more details for each of the cards on my blog (Part 1, Part 2, Part 3, Part 4)
Temur Sabertooth and Crystal Shard are efficient ways to return creatures we control, while Release to the Wind lets us recast something from exile, which synergizes with the other mechanics mentioned above
The Swarmweaver and Wickerfolk Thresher are just a couple examples of the great upgrades Reaper King decks have recently received
When it was first revealed, however, this deck was absolutely hated by the MTG community
Crystalline Sliver Crystalline Sliver allows Sliver players to play their game without being paranoid (or at least, while being less paranoid) that disaster will strike them at any time