While theres not going to be a set answer for every deck, Ive personally found that 4-5 is a good minimum for most decks I play in Commander, though if you play a deck that doesnt use a lot of creatures, you could easily find yourself playing more than 10
Timed Power-Up: The Burst Modes introduced in Versus Royal Knights have this if they are Burst Digivolved (which costs 0 memory and returns a specified Tamer to your hand, as opposed to a full 5 memory), as the top card of the digimon is trashed at the end of the turn it entered play
With Millennium Print Group acquired, The Pokemon Company seems to have put a ring on the finger of one of its most important manufacturing partners
The key word here is send, which makes this card incredibly useful
Incapsula incident ID: 421000750004614542-7777137828631244
Loving the nostalgia here