The deathtouch is quite often relevant in the power level where turning creatures sideways is usually the way to win the game, and having what is essentially single target creature destruction in the command zone if people decide to swing your way seemed to matter quite often
Each Secret Lair is currently selling for between $135 and $200 now, with Storm being the most expensive Secret Lair by a decent margin
Glimmer itself was eminently playable and you can split this card's cost up over multiple turns
Revel in Riches Description : Revel in Riches is an enchantment that gives you a treasure token whenever a creature an opponent controls dies
Figure out what your personal metagame is like and run the cards that thrive in that specific environment or just cram in whatever blue instants/sorceries you have on hand and go to town, up to you
For example, if two creatures you control with lifelink deal combat damage at the same time, Wax-Wane Witness's last ability will trigger twice